/* ============================================
   PORTFOLIO - NJINE TIENCHEU Elie
   Modern Dark Theme - Refined Design
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
    /* Background Colors - Deep Dark */
    --bg-primary: #050507;
    --bg-secondary: #0a0a0e;
    --bg-tertiary: #0f0f14;
    --bg-card: #12121a;
    --bg-card-hover: #18182a;
    
    /* Accent Colors - Purple/Blue Gradient */
    --accent-primary: #8b5cf6;
    --accent-secondary: #6366f1;
    --accent-light: #a78bfa;
    --accent-dim: rgba(139, 92, 246, 0.12);
    --accent-border: rgba(139, 92, 246, 0.25);
    
    /* Teal/Cyan for highlights */
    --teal: #06b6d4;
    --teal-light: #22d3ee;
    --teal-dim: rgba(6, 182, 212, 0.12);
    
    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Border Colors */
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent-primary);
    color: white;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: var(--radius-full);
}

/* ===== BACKGROUND EFFECTS ===== */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse 80% 50% at 20% -10%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -2;
}

.bg-grid {
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
    z-index: -1;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-xl);
    background: rgba(5, 5, 7, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 2px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

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

.logo-dot {
    color: var(--accent-primary);
    font-size: 2rem;
    line-height: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--accent-light);
}

.nav-actions {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn i {
    font-size: 0.875rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-hover);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-border);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    color: var(--accent-light);
    border-color: var(--accent-border);
    background: var(--accent-dim);
}

.btn-block {
    width: 100%;
}

/* Icon Action Buttons */
.btn-icon-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 1rem;
}

.btn-icon-action:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-border);
    color: var(--accent-light);
    transform: translateY(-2px);
}

.btn-icon-action.btn-details {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: transparent;
    color: white;
}

.btn-icon-action.btn-details:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* ===== SECTIONS ===== */
.section {
    padding: var(--space-4xl) var(--space-xl);
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-light);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--teal-dim);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--teal);
    margin-bottom: var(--space-lg);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--teal);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.45em;
    margin-bottom: var(--space-sm);
}

.title-highlight {
    display: block;
    color: var(--text-primary);
}

.title-accent {
    display: block;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 480px;
    margin-bottom: var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.stat-item {
    text-align: left;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
}

.hero-image-frame {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    z-index: 2;
}

.hero-image-frame::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        var(--accent-primary),
        var(--teal),
        var(--accent-secondary),
        var(--accent-primary)
    );
    animation: rotate 6s linear infinite;
    z-index: -1;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-image-placeholder {
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-tertiary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.hero-image-decoration {
    position: absolute;
    inset: -30px;
    border: 1px dashed var(--border);
    border-radius: 50%;
    animation: rotate 30s linear infinite reverse;
}

.hero-image-glow {
    position: absolute;
    inset: -60px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    z-index: -1;
}

.hero-location-badge {
    position: absolute;
    bottom: 20px;
    right: -10px;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--teal);
    z-index: 3;
}

.hero-location-badge i {
    font-size: 0.75rem;
}

/* ===== SERVICES SECTION ===== */
.services-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.service-tabs {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.service-tab {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: left;
}

.service-tab i:first-child {
    font-size: 1rem;
    color: var(--accent-light);
    width: 20px;
}

.service-tab span {
    flex: 1;
}

.tab-arrow {
    font-size: 0.75rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-base);
}

.service-tab:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.service-tab.active {
    background: var(--accent-dim);
    border-color: var(--accent-border);
    color: var(--text-primary);
}

.service-tab.active .tab-arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--accent-light);
}

.service-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    min-height: 280px;
}

.service-panel {
    display: none;
}

.service-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.service-panel h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.service-panel > p {
    font-size: 0.9375rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.service-features {
    list-style: none;
    display: grid;
    gap: var(--space-sm);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.service-features li i {
    font-size: 0.75rem;
    color: var(--teal);
}

/* ===== PROJECTS SECTION ===== */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.filter-btn {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
}

.filter-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    border-color: transparent;
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-slow);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-border);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.15);
}

.project-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.project-thumbnail {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-icon {
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.2);
}

.project-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-light);
}

.project-badge.badge-progress {
    background: rgba(6, 182, 212, 0.2);
    border-color: rgba(6, 182, 212, 0.3);
    color: var(--teal);
}

.project-content {
    padding: var(--space-lg);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.project-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-light);
}

.project-year {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.project-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.project-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.tech-tag {
    padding: 4px 10px;
    background: var(--accent-dim);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--accent-light);
}

.project-actions {
    display: flex;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

/* ===== EXPERIENCE SECTION ===== */
.experience-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
}

.experience-column {
    position: relative;
}

.column-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.column-header i {
    font-size: 1.25rem;
    color: var(--accent-light);
}

.column-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.timeline {
    position: relative;
    padding-left: var(--space-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary), var(--teal), transparent);
}

.timeline-education::before {
    background: linear-gradient(180deg, var(--teal), var(--accent-secondary), transparent);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-xl) + 1px);
    top: 4px;
    width: 10px;
    height: 10px;
    background: var(--accent-primary);
    border: 2px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
}

.timeline-education .timeline-marker {
    background: var(--teal);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--accent-border);
    background: var(--bg-card-hover);
}

.timeline-date {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: var(--space-xs);
}

.timeline-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.timeline-company {
    font-size: 0.8125rem;
    color: var(--teal);
    margin-bottom: var(--space-sm);
}

.timeline-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== SKILLS SECTION ===== */
.skills-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: var(--space-md);
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    cursor: default;
}

.skill-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-border);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.1);
}

.skill-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-dim);
    border-radius: var(--radius-md);
    color: var(--accent-light);
    font-size: 1.5rem;
}

.skill-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.skill-level {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-light);
}

/* ===== CONTACT SECTION ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-dim);
    border-radius: var(--radius-md);
    color: var(--accent-light);
    flex-shrink: 0;
    font-size: 1rem;
}

.contact-details {
    flex: 1;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.contact-value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.contact-value:hover {
    color: var(--accent-light);
}

.contact-social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.social-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition-base);
    font-size: 1rem;
}

.social-btn:hover {
    background: var(--accent-dim);
    border-color: var(--accent-border);
    color: var(--accent-light);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 0.875rem var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition-base);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    background: var(--bg-card-hover);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    border-top: 1px solid var(--border);
    padding: var(--space-2xl) var(--space-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 2px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 400px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer-location {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.footer-location i {
    font-size: 0.75rem;
}

/* ===== GALLERY MODAL ===== */
.gallery-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.gallery-modal.active {
    opacity: 1;
    visibility: visible;
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
}

.gallery-container {
    position: relative;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition-slow);
}

.gallery-modal.active .gallery-container {
    transform: scale(1);
}

.gallery-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.gallery-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gallery-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 1rem;
}

.gallery-close:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.gallery-content {
    padding: var(--space-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.gallery-image {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    cursor: pointer;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.gallery-image:hover {
    transform: scale(1.01);
}

.gallery-image.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.gallery-image:last-child {
    margin-bottom: 0;
}

.gallery-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-md);
    border-top: 1px solid var(--border);
}

.gallery-nav-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 0.875rem;
}

.gallery-nav-btn:hover {
    background: var(--bg-card-hover);
    color: var(--accent-light);
    border-color: var(--accent-border);
}

.gallery-counter {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== ANIMATIONS ===== */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-visual {
        order: 1;
    }
    
    .hero-description {
        margin: 0 auto var(--space-xl);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-tabs {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .service-tab {
        flex: 0 0 auto;
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: var(--space-md);
    }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: var(--space-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        width: 100%;
        padding: var(--space-md);
    }
    
    .nav-actions {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .section {
        padding: var(--space-2xl) var(--space-md);
    }
    
    .hero {
        padding-top: 80px;
    }
    
    .hero-container {
        padding: 0 var(--space-md);
    }
    
    .hero-image-wrapper {
        width: 220px;
        height: 220px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-image-wrapper {
        width: 180px;
        height: 180px;
    }
    
    .hero-profile-img {
        width: 172px;
        height: 172px;
        object-position: center top;
    }
    
    .hero-location-badge {
        bottom: -10px;
        right: 50%;
        transform: translateX(50%);
        font-size: 0.65rem;
        padding: 6px 10px;
    }
    
    .skills-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== LANGUAGE SWITCHER ===== */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 3px;
    margin-right: var(--space-md);
}

.lang-btn {
    padding: 6px 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-base);
}

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

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

/* Mobile Language Switcher */
.nav-lang-mobile {
    display: none;
}

.lang-switcher-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 4px;
    margin-top: var(--space-md);
}

@media (max-width: 768px) {
    .lang-switcher {
        display: none;
    }
    
    .nav-lang-mobile {
        display: block;
        width: 100%;
        text-align: center;
    }
}

/* ===== PROFILE IMAGE ===== */
.hero-profile-img {
    width: 292px;
    height: 292px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* ===== GALLERY GRID ===== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-md);
    padding: var(--space-lg);
    max-height: 70vh;
    overflow-y: auto;
}

.gallery-grid-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 16/10;
    background: var(--bg-tertiary);
}

.gallery-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.gallery-grid-item:hover img {
    transform: scale(1.05);
}

.gallery-grid-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
}

.gallery-grid-item:hover .gallery-grid-overlay {
    opacity: 1;
}

.gallery-grid-overlay i {
    font-size: 1.5rem;
    color: white;
}

/* ===== LIGHTBOX ===== */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-overlay {
    position: absolute;
    inset: 0;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 10;
    font-size: 1.25rem;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 5;
}

.lightbox-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 10;
    font-size: 1.25rem;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: white;
    z-index: 10;
}

/* Lightbox Responsive */
@media (max-width: 768px) {
    .lightbox-nav {
        width: 40px;
        height: 40px;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--space-sm);
    }
}

/* ============================================
   NEUTRAL MODE (plateformes freelance)
   Activé via sous-domaine portfolio.*
   Masque tous les moyens de contact direct.
   ============================================ */
html.neutral-mode [data-neutral-hide] {
    display: none !important;
}

/* Retire les séparateurs/espaces laissés par les items masqués */
html.neutral-mode .nav-links li:has([data-neutral-hide]),
html.neutral-mode li[data-neutral-hide] {
    display: none !important;
}

/* Éléments visibles UNIQUEMENT en mode neutre (textes alternatifs) */
html.neutral-mode .neutral-only-text {
    display: block !important;
}