/* 
 * Main CSS file for Pedro Pestana's professional website
 * This uses a utility-class inspired approach similar to Tailwind
 * for easy migration to a Tailwind-based framework like Next.js
 */

/* CSS Reset and Base Styles */
:root {
    /* Color Palette - Professional & Technical */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #0f766e;
    --color-accent: #8b5cf6;
    --color-dark: #1e293b;
    --color-dark-light: #334155;
    --color-gray: #64748b;
    --color-gray-light: #e2e8f0;
    --color-light: #f8fafc;
    --color-white: #ffffff;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Source Code Pro', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}
}

/* ===== Education Section ===== */
.education-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.education-item {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-primary);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.education-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.education-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: var(--color-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.education-details {
    flex: 1;
}

.education-details h3 {
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    font-size: 1.3rem;
}

.education-institution {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.education-period {
    color: var(--color-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

.education-focus {
    color: var(--color-dark);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-light);
}

.education-highlights {
    list-style: none;
    margin-top: var(--spacing-md);
}

.education-highlights li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-dark-light);
}

.education-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.certifications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.certification {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-light);
}

.certification:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.certification h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.certification-date {
    color: var(--color-gray);
    font-size: 0.9rem;
}

.current-focus {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.current-focus p {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: 0;
}

.current-focus i {
    color: var(--color-primary);
    margin-right: var(--spacing-sm);
}

.philosophy-quote {
    font-style: italic;
    color: var(--color-dark-light);
    border-left: 3px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    background-color: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

/* Responsive design for education section */
@media (max-width: 768px) {
    .education-item {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .education-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
}   
    /* Publication Venues Styling */
.venue-list {
    list-style: none;
    padding-left: 0;
}

.venue-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
    transition: transform var(--transition-fast);
}

.venue-list li:hover {
    transform: translateX(4px);
}

.venue-list li:last-child {
    border-bottom: none;
}

.venue-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-dark);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

.venue-link:hover {
    color: var(--color-primary);
}

.venue-link i {
    color: var(--color-primary);
    font-size: 0.875rem;
    opacity: 0.8;
}

.venue-domain {
    font-size: 0.75rem;
    color: var(--color-gray);
    margin-left: auto;
    font-style: italic;
}

/* Responsive adjustments for venue links */
@media (max-width: 768px) {
    .venue-link {
        flex-wrap: wrap;
    }
    
    .venue-domain {
        margin-left: 0;
        width: 100%;
        margin-top: var(--spacing-xs);
    }
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container utility */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* Navigation */
.navbar {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-md) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
}

.logo:hover {
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-menu a {
    color: var(--color-gray);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-dark);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--color-dark);
    left: 0;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: var(--spacing-lg);
}

.lang-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray);
    text-transform: uppercase;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.lang-link:hover {
    color: var(--color-primary);
    background-color: var(--color-light);
}

.lang-link.active {
    color: var(--color-primary);
    background-color: var(--color-light);
}

.lang-separator {
    color: var(--color-gray-light);
    font-size: 0.875rem;
    user-select: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: #0e5c55;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-primary);
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0;
}

.btn-text:hover {
    color: var(--color-primary-dark);
}

/* Hero Section */
.hero {
    padding: var(--spacing-3xl) 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.highlight {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.code-snippet {
    background-color: var(--color-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.code-header {
    background-color: var(--color-dark-light);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.code-dot.red {
    background-color: #f87171;
}

.code-dot.yellow {
    background-color: #fbbf24;
}

.code-dot.green {
    background-color: #10b981;
}

.code-title {
    color: var(--color-gray-light);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    margin-left: var(--spacing-md);
}

.code-snippet pre {
    margin: 0;
    padding: var(--spacing-md);
    overflow-x: auto;
}

.code-snippet code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-gray-light);
    line-height: 1.5;
}

/* Sections */
section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    margin-bottom: var(--spacing-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

/* Expertise Grid */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.expertise-card {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.expertise-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.expertise-icon {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.projects-grid.detailed {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.project-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-light);
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.project-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.project-category {
    background-color: var(--color-gray-light);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.project-body {
    padding: var(--spacing-lg);
}

.project-description {
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    background-color: var(--color-light);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

.project-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-light);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    align-items: center;
}

/* Skills */
.skills-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-2xl);
}

.skills-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.filter-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.skills-legend {
    background-color: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.proficiency-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.proficiency-dot.expert {
    background-color: var(--color-primary);
}

.proficiency-dot.advanced {
    background-color: var(--color-secondary);
}

.proficiency-dot.intermediate {
    background-color: var(--color-accent);
}

.proficiency-dot.basic {
    background-color: var(--color-gray);
}

.skills-grid {
    columns: 2;
    column-gap: var(--spacing-lg);
}

.skill-category {
    break-inside: avoid;
    margin-bottom: var(--spacing-xl);
}

.skill-category h3 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-gray-light);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.skill-item {
    background-color: var(--color-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    min-width: 150px;
}

/* Articles */
.articles-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-2xl);
}

.article-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-light);
    margin-bottom: var(--spacing-xl);
    display: flex;
    flex-direction: column;
}



.article-content {
    padding: var(--spacing-xl);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-gray);
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.article-excerpt {
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tag {
    background-color: var(--color-light);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.article-visual {
    /* Hidden by default. Shown via @media (min-width: 900px) for featured cards only. */
    display: none;
}

.placeholder-visual {
    font-size: 4rem;
    color: var(--color-gray-light);
}

.sidebar-card {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.sidebar-card h3 {
    margin-bottom: var(--spacing-md);
}

.research-list,
.venue-list {
    list-style: none;
}

.research-list li,
.venue-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.research-list li:last-child,
.venue-list li:last-child {
    border-bottom: none;
}

/* Contact */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-methods {
    margin-bottom: var(--spacing-xl);
}

.contact-method {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-details h3 {
    margin-bottom: var(--spacing-xs);
}

.contact-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-weight: 500;
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-light);
    border-radius: 50%;
    color: var(--color-dark);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.contact-form-container {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.form-intro {
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group.checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.form-group.checkbox input {
    width: auto;
    margin-top: 4px;
}

.form-note {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-top: var(--spacing-md);
    text-align: center;
}

.contact-faq {
    margin-top: var(--spacing-3xl);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.faq-item {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.faq-item h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* About Page */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
}

.about-section {
    margin-bottom: var(--spacing-2xl);
}

/* CV Section in About Page (matches contact.html contact-method) */
.cv-contact-method {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-light);
}

.cv-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    flex-shrink: 0;
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.focus-item h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.focus-item i {
    color: var(--color-primary);
}

.approach-list {
    list-style: none;
    margin-left: var(--spacing-md);
}

.approach-list li {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
    position: relative;
}

.approach-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.certification-list,
.exploring-list {
    list-style: none;
}

.certification-list li,
.exploring-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.certification-list li:last-child,
.exploring-list li:last-child {
    border-bottom: none;
}

/* Footer */
.footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    margin-top: auto;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand .logo {
    color: var(--color-white);
}

.footer-tagline {
    color: var(--color-gray-light);
    margin-top: var(--spacing-sm);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

.footer-column h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-gray-light);
}

.footer-column a:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid var(--color-dark-light);
    padding-top: var(--spacing-xl);
    text-align: center;
    color: var(--color-gray);
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

/* Utility Classes */
.page-header {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray);
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.loading {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray);
    font-style: italic;
}

.project-filters {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    align-items: flex-end;
    margin-top: var(--spacing-xl);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    min-width: 200px;
}

.methodology-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.step {
    text-align: center;
    padding: var(--spacing-xl);
}

.step-number {
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto var(--spacing-lg);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
    
    .skills-sidebar {
        position: static;
    }
    
    .articles-container {
        grid-template-columns: 1fr;
    }
    
 
    
    .about-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* Contact page - stack columns on mobile */
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .expertise-grid,
    .projects-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        columns: 1;
    }
}
/* Additional CSS for error states and loading */
.error {
    color: #dc2626;
    text-align: center;
    padding: var(--spacing-2xl);
    background-color: #fef2f2;
    border-radius: var(--radius-lg);
    border: 1px solid #fecaca;
}

.no-data {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray);
    font-style: italic;
}

.loading {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    margin-left: var(--spacing-sm);
    border: 2px solid var(--color-gray-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Keyword highlighting for code snippets */
.keyword {
    color: #f472b6;
}

.number {
    color: #60a5fa;
}

.string {
    color: #34d399;
}

.comment {
    color: #9ca3af;
}

/* Disabled button state */
.btn-text.disabled {
    color: var(--color-gray);
    cursor: not-allowed;
}

.btn-text.disabled:hover {
    color: var(--color-gray);
}
/* Improved Skills Page Styles */
.skill-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.skill-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.skill-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.skill-name {
    font-weight: 600;
    color: var(--color-dark);
    font-size: 1.1rem;
    flex-grow: 1;
    margin-left: var(--spacing-md);
}

.skill-experience {
    background-color: var(--color-light);
    color: var(--color-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    margin-left: var(--spacing-md);
}

/* Proficiency dot styling */
.proficiency-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
    position: relative;
}

.proficiency-dot.expert {
    background-color: var(--color-primary);
}

.proficiency-dot.advanced {
    background-color: var(--color-secondary);
}

.proficiency-dot.intermediate {
    background-color: var(--color-accent);
}

.proficiency-dot.basic {
    background-color: var(--color-gray);
}

/* Skills legend improvement */
.skills-legend {
    background-color: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-light);
}

/* Skills sidebar improvements */
.skills-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.filter-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
    color: var(--color-dark);
}

.filter-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.filter-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    font-weight: 600;
}

/* Category header improvements */
.skill-category h3 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-primary);
    color: var(--color-dark);
    font-size: 1.5rem;
    position: relative;
}

.skill-category h3::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background-color: var(--color-primary);
}

/* Responsive adjustments for skills page */
@media (max-width: 1024px) {
    .skills-container {
        grid-template-columns: 1fr;
    }
    
    .skills-sidebar {
        position: static;
        margin-bottom: var(--spacing-xl);
    }
    
    .skill-items {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 640px) {
    .skill-items {
        grid-template-columns: 1fr;
    }
    
    .skill-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .skill-experience {
        align-self: flex-start;
        margin-left: 28px; /* Align with skill name (proficiency dot + margin) */
    }
}
/* Project Details Page Styles */
.project-details-container {
    padding: var(--spacing-xl) 0;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-sm) 0;
}

.btn-back:hover {
    color: var(--color-primary-dark);
}

.project-header-detail {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-light);
}

.project-meta-detail {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.project-category-detail,
.project-year-detail,
.project-status-detail {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.project-category-detail {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.project-year-detail {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.project-status-detail {
    background-color: var(--color-gray-light);
    color: var(--color-dark);
}

.project-title-detail {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.project-subtitle-detail {
    font-size: 1.25rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
}

.project-links-detail {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.project-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.project-section {
    margin-bottom: var(--spacing-2xl);
}

.project-section h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.project-section h2 i {
    color: var(--color-primary);
}

.project-section h3 {
    font-size: 1.25rem;
    margin: var(--spacing-lg) 0 var(--spacing-md);
    color: var(--color-dark-light);
}

/* Architecture diagram */
.architecture-diagram {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.arch-component {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-gray-light);
    transition: transform var(--transition-fast);
}

.arch-component:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.arch-component h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.arch-tech {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-gray);
    font-family: var(--font-mono);
}

/* Feature grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.feature-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.feature-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.feature-item i {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.feature-item h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

/* Tech stack */
.tech-stack {
    margin: var(--spacing-lg) 0;
}

.tech-category {
    margin-bottom: var(--spacing-xl);
}

.tech-category h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark-light);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag.large {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-light);
    color: var(--color-dark);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
}

/* Results grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.result-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
}

.result-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.result-label {
    font-size: 0.875rem;
    color: var(--color-gray);
}

/* Testimonial */
.testimonial {
    background-color: var(--color-light);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.testimonial p {
    font-style: italic;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.testimonial footer {
    color: var(--color-gray);
    font-size: 0.875rem;
}

/* Sidebar styles */
.project-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.sidebar-card {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.sidebar-card h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.timeline {
    list-style: none;
}

.timeline li {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.timeline li:last-child {
    border-bottom: none;
}

.timeline-date {
    font-weight: 600;
    color: var(--color-dark);
    font-size: 0.875rem;
}

.timeline-event {
    color: var(--color-gray);
    font-size: 0.875rem;
}

.team-list {
    margin-top: var(--spacing-md);
}

.team-member {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.team-member:last-child {
    border-bottom: none;
}

.member-role {
    font-size: 0.875rem;
    color: var(--color-gray);
}

.member-name {
    font-weight: 600;
    color: var(--color-dark);
}

.doc-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.doc-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-gray-light);
}

.doc-link:last-child {
    border-bottom: none;
}

.doc-link:hover {
    color: var(--color-primary-dark);
}

.related-projects {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.related-project {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
    display: block;
}

.related-project:empty {
    display: none;
}

.related-project:hover {
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.related-project h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.related-project p {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin: 0;
}

/* Call to action */
.project-cta {
    text-align: center;
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-light);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-2xl);
}

.project-cta h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.project-cta p {
    font-size: 1.25rem;
    color: var(--color-gray);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive design */
@media (max-width: 1024px) {
    .project-content {
        grid-template-columns: 1fr;
    }
    
    .project-sidebar {
        position: static;
        margin-top: var(--spacing-2xl);
    }
    
    .project-title-detail {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .project-meta-detail {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .project-links-detail {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .project-links-detail .btn {
        width: 100%;
        text-align: center;
    }
    
    .architecture-diagram,
    .feature-grid,
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .cta-actions .btn {
        width: 100%;
    }
}
/* Article Details Page Styles */
.article-details-container {
    padding: var(--spacing-xl) 0;
    max-width: 1200px;
    margin: 0 auto;
}

.article-header-detail {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-light);
}

.article-meta-detail {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.article-category-detail,
.article-date-detail,
.article-readtime-detail {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.article-category-detail {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.article-date-detail {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.article-readtime-detail {
    background-color: var(--color-gray-light);
    color: var(--color-dark);
}

.article-title-detail {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
    line-height: 1.2;
}

.article-subtitle-detail {
    font-size: 1.25rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
}

.article-author {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.author-details {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--color-dark);
}

.author-title {
    font-size: 0.875rem;
    color: var(--color-gray);
}

.article-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.share-label {
    font-size: 0.875rem;
    color: var(--color-gray);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-light);
    color: var(--color-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.article-hero {
    margin: var(--spacing-2xl) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 4rem;
}

.image-caption {
    text-align: center;
    padding: var(--spacing-sm);
    color: var(--color-gray);
    font-size: 0.875rem;
    font-style: italic;
    border-bottom: 1px solid var(--color-gray-light);
}

.article-content-detail {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.article-main {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-2xl);
}

.article-toc {
    position: sticky;
    top: 100px;
    align-self: start;
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    height: fit-content;
}

.article-toc h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.article-toc ul {
    list-style: none;
}

.article-toc li {
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-light);
}

.article-toc li:last-child {
    border-bottom: none;
}

.article-toc a {
    color: var(--color-gray);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.article-toc a:hover {
    color: var(--color-primary);
}

.article-body {
    max-width: 800px;
}

.article-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-light);
}

.article-section:last-child {
    border-bottom: none;
}

.article-section h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
    padding-top: var(--spacing-md);
    scroll-margin-top: 100px;
}

.article-section h3 {
    font-size: 1.25rem;
    margin: var(--spacing-lg) 0 var(--spacing-md);
    color: var(--color-dark-light);
}

.article-section h4 {
    font-size: 1.1rem;
    margin: var(--spacing-md) 0;
    color: var(--color-dark);
}

.article-section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.article-section ul,
.article-section ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.article-section li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.article-note {
    background-color: #f0f9ff;
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    display: flex;
    gap: var(--spacing-md);
}

.article-note i {
    color: var(--color-primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.article-tip {
    background-color: #f0fdf4;
    border-left: 4px solid var(--color-secondary);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    display: flex;
    gap: var(--spacing-md);
}

.article-tip i {
    color: var(--color-secondary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.architecture-overview {
    margin: var(--spacing-xl) 0;
}

.arch-layer {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-primary);
}

.arch-layer h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.pattern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.pattern-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.pattern-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pattern-card h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.pattern-card i {
    color: var(--color-primary);
}

.pattern-tag {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-light);
    color: var(--color-gray);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.article-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-xl) 0;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-table thead {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.article-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
}

.article-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-light);
}

.article-table tbody tr:hover {
    background-color: var(--color-light);
}

.monitoring-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.metric-card {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.metric-card h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.metric-card ul {
    list-style: none;
    padding-left: 0;
}

.metric-card li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.metric-card li:last-child {
    border-bottom: none;
}

.results-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.article-cta {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    margin: var(--spacing-2xl) 0;
}

.article-cta h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.article-cta p {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-gray);
}

/* Article sidebar */
.article-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.save-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.save-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-dark);
}

.save-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.save-btn i {
    font-size: 1.25rem;
}

.related-articles {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.related-article {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
}

.related-article:hover {
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.related-article h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.related-article p {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.article-meta {
    font-size: 0.75rem;
    color: var(--color-gray);
}

.publication-info {
    margin-top: var(--spacing-md);
}

.publication-name {
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.publication-date {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.publication-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-size: 0.875rem;
}

/* Author bio */
.author-bio {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.author-bio-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.author-bio-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.author-bio-info h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.author-bio-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

/* Comments section */
.comments-section {
    margin: var(--spacing-2xl) 0;
    padding: var(--spacing-xl);
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
}

.comments-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.comments-placeholder {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-gray);
}

/* Newsletter signup */
.newsletter-signup {
    text-align: center;
    padding: var(--spacing-2xl);
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    margin: var(--spacing-2xl) 0;
}

.newsletter-signup h3 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.newsletter-signup p {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-gray);
}

.newsletter-form .form-group {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex-grow: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Responsive design */
@media (max-width: 1024px) {
    .article-content-detail {
        grid-template-columns: 1fr;
    }
    
    .article-main {
        grid-template-columns: 1fr;
    }
    
    .article-toc {
        position: static;
        margin-bottom: var(--spacing-xl);
    }
    
    .article-sidebar {
        position: static;
        margin-top: var(--spacing-2xl);
    }
    
    .article-title-detail {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .article-meta-detail {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .article-author {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .article-share {
        align-self: flex-start;
    }
    
    .pattern-grid,
    .monitoring-grid,
    .results-summary {
        grid-template-columns: 1fr;
    }
    
    .article-table {
        display: block;
        overflow-x: auto;
    }
    
    .newsletter-form .form-group {
        flex-direction: column;
    }
    
    .newsletter-form .btn {
        width: 100%;
    }
    
    .article-hero {
        margin: var(--spacing-xl) 0;
    }
    
    .article-image-placeholder {
        height: 300px;
    }
}
/* Articles Page Specific Styles */
.articles-filters {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    align-items: flex-end;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.articles-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.article-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-light);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}


.article-content {
    padding: var(--spacing-xl);
    flex: 1;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-gray);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.article-category {
    background-color: var(--color-light);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.article-readtime {
    color: var(--color-gray);
    font-style: italic;
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.article-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.article-excerpt {
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tag {
    background-color: var(--color-light);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.article-visual {
    /* Hidden by default; shown only on wide screens inside .article-card.featured
       via the @media (min-width: 900px) rule at the bottom of this file. */
    display: none;
}

.placeholder-visual {
    font-size: 4rem;
    color: var(--color-gray-light);
    padding: var(--spacing-xl);
}

.articles-sidebar-content {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-gray-light);
}

.research-focus {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
}

.focus-area {
    background-color: var(--color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.focus-area h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.focus-area h3 i {
    color: var(--color-primary);
}

.research-list,
.venue-list {
    list-style: none;
}

.research-list li,
.venue-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.research-list li:last-child,
.venue-list li:last-child {
    border-bottom: none;
}

/* Responsive adjustments */
/* Old 1024px featured breakpoint removed — superseded by min-width:900px / max-width:899px rules below */

@media (max-width: 768px) {
    .articles-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .filter-select {
        width: 100%;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}
/* ========== NEW: Background Patterns ========== */
body {
    background-color: var(--color-white);
    position: relative;
    overflow-x: hidden;
}

/* Subtle topographic background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        /* Very subtle grid */
        linear-gradient(to right, rgba(37, 99, 235, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(37, 99, 235, 0.02) 1px, transparent 1px),
        /* Even more subtle contour lines */
        radial-gradient(circle at 20% 80%, rgba(14, 116, 144, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.02) 0%, transparent 50%);
    background-size: 
        50px 50px, /* Grid size */
        50px 50px, /* Grid size */
        300px 300px, /* Contour size */
        300px 300px; /* Contour size */
    z-index: -1;
    pointer-events: none;
}

/* Alternative: Latitude/Longitude background (uncomment to use) */
/*
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(37, 99, 235, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -1;
    pointer-events: none;
}
*/

/* ========== NEW: Logo Updates ========== */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    text-decoration: none;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
    position: relative;
}

.logo-icon::after {
    content: '';
    position: absolute;
    width: 42px;
    height: 42px;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    opacity: 0.3;
}

/* ========== NEW: Profile Photo Integration ========== */

/* Homepage Hero with Photo */
.hero-with-photo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-3xl) 0;
}

.hero-photo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-photo {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 8px solid var(--color-white);
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
}

.profile-photo-frame {
    position: relative;
}

.profile-photo-frame::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    opacity: 0.3;
    z-index: 0;
}

.profile-photo-frame::after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--color-secondary);
    border-radius: 50%;
    opacity: 0.2;
    z-index: 0;
}

/* About Page Photo */
.about-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid var(--color-white);
    box-shadow: var(--shadow-lg);
    margin: 0 auto var(--spacing-xl);
}

/* Sidebar Photo (for article details, etc.) */
.author-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-md);
}

/* Photo in contact section */
.contact-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-white);
    box-shadow: var(--shadow-lg);
    margin: 0 auto;
}

/* ========== UPDATED: Hero Section with Photo ========== */
.hero {
    padding: var(--spacing-3xl) 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

/* If you want photo on left, content on right */
.hero.left-photo {
    grid-template-columns: 300px 1fr;
}

.hero.right-photo {
    grid-template-columns: 1fr 300px;
}

.hero-photo-side {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-photo-side .profile-photo {
    width: 250px;
    height: 250px;
}

/* ========== NEW: Responsive Adjustments ========== */
@media (max-width: 1024px) {
    .hero-with-photo,
    .hero.left-photo,
    .hero.right-photo {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-photo-side {
        order: -1;
        margin-bottom: var(--spacing-xl);
    }
    
    .profile-photo {
        width: 250px;
        height: 250px;
    }
    
    .about-photo {
        width: 180px;
        height: 180px;
    }
}

@media (max-width: 768px) {
    .profile-photo {
        width: 200px;
        height: 200px;
    }
    
    .about-photo {
        width: 150px;
        height: 150px;
    }
    
    .contact-photo {
        width: 120px;
        height: 120px;
    }
}
.about-header-with-photo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .about-header-with-photo {
        flex-direction: row;
        text-align: left;
        align-items: center;
        gap: var(--spacing-2xl);
    }
    
    .about-header-with-photo .about-photo {
        margin: 0;
    }
}
/* ===== FIX: Article details meta display ===== */
.article-meta-detail {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    align-items: center;
}

.article-readtime-detail {
    display: inline-block !important;
    visibility: visible !important;
    background-color: var(--color-gray-light);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}
/* ===== FEATURED ARTICLE CARD — canonical rules (replaces all previous featured overrides) =====
   Strategy:
   - Badge is absolutely positioned (works in both column and row layouts)
   - On wide screens (>= 900px): flex-direction row, .article-visual shown on the right
   - On narrow screens (< 900px): flex-direction column, .article-visual hidden → NO grey bar
   ============================================================================================= */

.article-card.featured {
    position: relative;
}

.article-card.featured .article-content {
    padding-top: 50px;
    flex: 1;
}

.article-card.featured .article-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background-color: var(--color-primary);
    color: white;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
    z-index: 10;
    display: inline-block;
    width: auto;
    border: 2px solid white;
}

/* Wide (>= 1100px): side-by-side layout — visual panel with decorative geo pattern */
@media (min-width: 1100px) {
    .article-card.featured {
        flex-direction: row;
        align-items: stretch;
    }

    .article-card.featured .article-visual {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 260px;
        flex-shrink: 0;
        background-color: var(--color-primary);
        background-image:
            radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
            radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06) 0%, transparent 40%),
            repeating-linear-gradient(
                45deg,
                transparent,
                transparent 18px,
                rgba(255,255,255,0.04) 18px,
                rgba(255,255,255,0.04) 19px
            );
        position: relative;
        overflow: hidden;
    }

    .article-card.featured .article-visual::before {
        content: '';
        position: absolute;
        width: 180px;
        height: 180px;
        border: 2px solid rgba(255,255,255,0.15);
        border-radius: 50%;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .article-card.featured .article-visual::after {
        content: '';
        position: absolute;
        width: 120px;
        height: 120px;
        border: 2px solid rgba(255,255,255,0.1);
        border-radius: 50%;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .article-card.featured .placeholder-visual {
        color: rgba(255,255,255,0.5);
        font-size: 3rem;
        z-index: 1;
        position: relative;
    }
}

/* Below 1100px: full-width column, visual hidden — no grey bar, no empty panel */
@media (max-width: 1099px) {
    .article-card.featured {
        flex-direction: column;
    }

    .article-card.featured .article-visual {
        display: none;
    }

    .article-card.featured .article-badge {
        top: 10px;
        left: 10px;
        padding: 4px 12px;
        font-size: 0.7rem;
    }
}
/* ═══ dot.cards Link Styles ═══ */
.dotcards-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 20px;
}

.dotcards-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.dotcards-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.dotcards-icon {
    font-size: 1.2rem;
}

.dotcards-text {
    white-space: nowrap;
}

/* Responsive */
@media (max-width: 768px) {
    .contact-photo-container {
        flex-direction: column;
        align-items: center;
    }
    
    .dotcards-wrapper {
        margin-left: 0;
        margin-top: 15px;
    }
}
/* ═══ Digital Card Button in Contact Methods ═══ */
.dotcards-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white !important;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    margin-top: 8px;
}

.dotcards-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.5);
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    color: white !important;
}

.dotcards-button i {
    font-size: 0.9rem;
}

/* Ensure contact method icon for digital card has matching color */
.contact-method:first-child .contact-icon {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
/* ═══════════════════════════════════════════════════════════
   CV DOWNLOAD BANNER
   ═══════════════════════════════════════════════════════════ */

.cv-download-banner {
    margin: 2rem 0 3rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px solid #bae6fd;
    border-radius: 12px;
    overflow: hidden;
}

.cv-banner-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
}

.cv-banner-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.cv-banner-text {
    flex: 1;
}

.cv-banner-text h3 {
    margin: 0 0 0.25rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
}

.cv-banner-text p {
    margin: 0;
    font-size: 0.875rem;
    color: #64748b;
}

.cv-download-button {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.cv-download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.5);
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    color: white;
}

.cv-download-button i {
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .cv-banner-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .cv-banner-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .cv-download-button {
        width: 100%;
        justify-content: center;
    }
}
/* ═══════════════════════════════════════════════════════════
   INTERACTIVE MAP - OpenStreetMap with Clickable Buttons
   ═══════════════════════════════════════════════════════════ */

.location-map {
    margin-top: 2rem;
}

.location-map h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 1.5rem;
}

.map-container-real {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

#map-frame-container {
    width: 100%;
    height: 350px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

#osm-map {
    border: 0;
    border-radius: 12px;
    width: 100%;
    height: 100%;
    display: block;
}

/* Map info - Interactive buttons */
.map-info {
    display: flex;
    flex-direction: row;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 0;
}

.map-location-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    
    /* Remove default button styles */
    font-family: inherit;
    font-size: inherit;
    text-align: left;
}

.map-location-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: #cbd5e1;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.map-location-item:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Active state when clicked */
.map-location-item.active {
    border-color: #3b82f6;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.location-pin-marker {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.map-location-item:hover .location-pin-marker {
    transform: scale(1.1);
}

.map-location-item.active .location-pin-marker {
    transform: scale(1.15);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.torres-vedras-marker {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.lisboa-marker {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

.location-details {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    pointer-events: none; /* Evita interferência no click */
}

.location-details strong {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-dark);
}

.location-details small {
    font-size: 0.8125rem;
    color: var(--color-gray);
}

/* Loading state (opcional) */
.map-location-item.loading {
    opacity: 0.6;
    pointer-events: none;
}

.map-location-item.loading .location-pin-marker {
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Responsive */
@media (max-width: 768px) {
    #map-frame-container {
        height: 300px;
    }
    
    .map-info {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .map-location-item {
        padding: 0.875rem;
    }
}

@media (max-width: 480px) {
    .map-container-real {
        padding: 0.75rem;
    }
    
    #map-frame-container {
        height: 250px;
        border-radius: 8px;
    }
    
    #osm-map {
        border-radius: 8px;
    }
}

/* Focus styles for accessibility */
.map-location-item:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

.map-location-item:focus:not(:focus-visible) {
    outline: none;
}



/* ── Project status badges ──────────────────────────────────────────────── */
.project-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.project-status {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
    flex-shrink: 0;
    margin-top: 2px;
}

.status-coming-soon {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.status-in-development {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.project-coming-soon {
    opacity: 0.85;
}

.btn-disabled {
    color: #9ca3af;
    cursor: default;
    font-size: 0.85rem;
}

.btn-disabled:hover {
    color: #9ca3af;
    text-decoration: none;
}

/* ── Article status badges ──────────────────────────────────────────────── */
.article-status {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
}

.article-status.status-in-preparation {
    background-color: #f3f4f6;
    color: #6b7280;
    border: 1px solid #d1d5db;
}

.article-in-preparation {
    opacity: 0.8;
}

.article-note {
    font-size: 0.8rem;
    color: #6b7280;
    font-style: italic;
    margin: 0.4rem 0 0.6rem;
}

.article-note i {
    margin-right: 4px;
}

/* ── Project sidebar — developer & AI disclosure ────────────────────────── */
.sidebar-note {
    font-size: 0.75rem;
    color: var(--color-text-secondary, #6b7280);
    line-height: 1.55;
    margin-top: 0.6rem;
    font-style: italic;
}

.sidebar-card-ai {
    border-left: 3px solid #8b5cf6;
}

.ai-note {
    color: #6b7280;
}

/* ── Gumroad buy button ─────────────────────────────────────────────────── */
.btn-buy {
    color: #e6414a;
    font-weight: 500;
    white-space: nowrap;
    font-size: 0.875rem;
}
.btn-buy:hover {
    color: #c0333b;
}

/* ── Project details — status banner ───────────────────────────── */
.project-status-banner {
    background: var(--color-background-warning);
    color: var(--color-text-warning);
    border: 0.5px solid var(--color-border-warning);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}
.project-status-banner i {
    margin-right: 6px;
}

/* ═══════════════════════════════════════════════════════════
   LANGUAGE SWITCHER - RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
    .navbar .container {
        flex-wrap: wrap;
    }
    
    .language-switcher {
        order: 2;
        margin-left: auto;
        margin-right: var(--spacing-md);
    }
    
    .menu-toggle {
        order: 3;
        display: block;
    }
    
    .nav-menu {
        order: 4;
        width: 100%;
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-menu.active {
        max-height: 500px;
        margin-top: var(--spacing-md);
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--color-gray-light);
    }
    
    .nav-menu a {
        display: block;
        padding: var(--spacing-md);
    }
}

/* ═══════════════════════════════════════════════════════════
   ARTICLE DETAILS — Layout + Galeria + Lightbox
   ═══════════════════════════════════════════════════════════ */

.article-content-detail { display: block !important; max-width: 760px; margin-bottom: var(--spacing-3xl); line-height: 1.8; }
.article-status-banner { background: #fefce8; color: #854d0e; border: 1px solid #fde047; border-radius: var(--radius-md); padding: 0.75rem 1rem; margin-bottom: 1.5rem; font-size: 0.875rem; font-weight: 500; display: none; }
.article-footer-detail { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-gray-light); }
.article-tags-detail { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
.related-articles-sidebar { position: sticky; top: 100px; align-self: start; }
.related-articles-sidebar .sidebar-card { background-color: var(--color-light); border-radius: var(--radius-lg); padding: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
.project-cover-image { width: 100%; border-radius: 12px; overflow: hidden; margin-bottom: 2rem; border: 1px solid var(--color-gray-light); box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.project-cover-image img { width: 100%; max-height: 480px; object-fit: cover; object-position: top; display: block; }
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.gallery-item { margin: 0; border-radius: 8px; overflow: hidden; border: 1px solid var(--color-gray-light); cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease; background: var(--color-light); }
.gallery-item:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.gallery-item img { width: 100%; height: 200px; object-fit: cover; object-position: top; display: block; }
.gallery-item figcaption { padding: 0.6rem 0.8rem; font-size: 0.8rem; color: var(--color-gray); line-height: 1.4; }
.gallery-lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.92); z-index: 9999; align-items: center; justify-content: center; padding: 2rem; }
.gallery-lightbox.active { display: flex; }
.lightbox-inner { max-width: 90vw; max-height: 90vh; display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.lightbox-inner img { max-width: 100%; max-height: 80vh; border-radius: 6px; object-fit: contain; }
.lightbox-caption { color: #d1d5db; font-size: 0.9rem; text-align: center; max-width: 700px; margin: 0; }
.lightbox-close, .lightbox-prev, .lightbox-next { position: fixed; background: rgba(255,255,255,0.1); border: none; color: #fff; cursor: pointer; border-radius: 50%; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; transition: background 0.2s; z-index: 10000; }
.lightbox-close { top: 1.5rem; right: 1.5rem; font-size: 1.8rem; }
.lightbox-prev { left: 1rem; top: 50%; transform: translateY(-50%); font-size: 2rem; }
.lightbox-next { right: 1rem; top: 50%; transform: translateY(-50%); font-size: 2rem; }