/* ===== CSS VARIABLES - EASY TO CUSTOMIZE ===== */
:root {
    /* Colors - Change these to customize the entire theme */
    --color-bg: #0a0a0b;
    --color-bg-secondary: #111113;
    --color-bg-card: #18181b;
    --color-bg-card-hover: #1f1f23;
    --color-border: #27272a;
    --color-border-light: #3f3f46;
    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    --color-accent: #22d3ee;
    --color-accent-secondary: #a78bfa;
    --color-success: #34d399;
    --color-warning: #fbbf24;

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --section-padding: 120px;
    --container-max: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 8px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.nav-logo-img {
    height: 40px;
    width: 40px;
    transition: var(--transition);
}

.nav-logo:hover .nav-logo-img {
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px var(--color-primary-glow));
}

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
}

/* Nav Actions (lang switcher + hamburger) */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 999px;
}

.lang-btn {
    padding: 4px 10px;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

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

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

.lang-divider {
    color: var(--color-border-light);
    font-size: 0.7rem;
    user-select: none;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
    max-width: 800px;
    text-align: center;
    position: relative;
    z-index: 1;
}

/* Hero Avatar */
.hero-avatar {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.avatar-img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 3px solid rgba(99, 102, 241, 0.3);
    box-shadow: 0 0 40px var(--color-primary-glow), 0 0 80px rgba(99, 102, 241, 0.08);
    transition: var(--transition);
    object-fit: cover;
}

.avatar-img:hover {
    transform: scale(1.05);
    border-color: var(--color-primary);
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.3);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--color-primary-glow);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-primary-hover);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-title {
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-greeting {
    display: block;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.hero-name {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary-hover) 50%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-location {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 20px;
    animation: fadeInUp 0.8s ease 0.15s both;
}

.hero-location svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-primary-hover);
    font-weight: 500;
    margin-bottom: 24px;
    min-height: 32px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.cursor {
    animation: blink 1s infinite;
    color: var(--color-primary);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 48px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-description strong {
    color: var(--color-text);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.2;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.5s both;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 0 30px var(--color-primary-glow);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.3);
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-hover);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.05rem;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.scroll-indicator span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-text-muted);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollDown 2s infinite;
}

/* ===== SECTION COMMON ===== */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.2;
    margin-bottom: 16px;
}

.highlight {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== ABOUT SECTION ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-lead {
    font-size: 1.15rem;
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

.about-text p em {
    color: var(--color-accent);
    font-style: normal;
    font-weight: 600;
}

.about-highlights {
    display: grid;
    gap: 16px;
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: var(--color-bg-card);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.highlight-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.highlight-item strong {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.highlight-item span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Code card */
.about-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: sticky;
    top: 100px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.card-dots span:nth-child(1) { background: #ef4444; }
.card-dots span:nth-child(2) { background: #fbbf24; }
.card-dots span:nth-child(3) { background: #34d399; }

.card-filename {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.card-code {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    overflow-x: auto;
}

.card-code .key { color: var(--color-primary-hover); }
.card-code .string { color: var(--color-success); }
.card-code .boolean { color: var(--color-warning); }

/* ===== SKILLS SECTION ===== */
.skills {
    background: var(--color-bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skills-grid .skill-category:nth-child(4),
.skills-grid .skill-category:nth-child(5) {
    grid-column: span 1;
}

@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .skills-grid .skill-category:nth-child(4),
    .skills-grid .skill-category:nth-child(5) {
        grid-column: span 1;
    }
}

.skill-category {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.skill-category h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    padding: 6px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    transition: var(--transition);
}

.skill-tag.primary {
    background: var(--color-primary-glow);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--color-primary-hover);
}

.skill-tag:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

/* ===== PROJECTS SECTION ===== */

/* Filter Tabs */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: var(--font-main);
    cursor: pointer;
    transition: var(--transition);
}

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

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card.hidden {
    display: none;
}

.project-badge.android-badge {
    background: var(--color-success);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.project-card:hover::before {
    opacity: 1;
}

.project-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(99, 102, 241, 0.05) 100%);
    border-color: rgba(99, 102, 241, 0.2);
}

.project-card.featured::before {
    opacity: 1;
}

.project-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--color-primary);
    color: white;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.project-icon {
    font-size: 2rem;
}

.project-category {
    font-size: 0.8rem;
    color: var(--color-primary-hover);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.project-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.7;
}

.project-metrics {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
}

.metric {
    text-align: center;
    flex: 1;
}

.metric-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary-hover);
}

.metric-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.project-features {
    margin-bottom: 20px;
    padding-left: 0;
}

.project-features li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.project-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    padding: 4px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
    background: var(--color-bg-secondary);
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto 48px;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-border), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: -33px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-bg-card);
    border: 3px solid var(--color-border-light);
    z-index: 1;
}

.timeline-marker.current {
    border-color: var(--color-primary);
    background: var(--color-primary);
    box-shadow: 0 0 20px var(--color-primary-glow);
}

.timeline-content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: var(--transition);
    position: relative;
}

.timeline-content:hover {
    border-color: var(--color-border-light);
    transform: translateX(4px);
}

.timeline-badge {
    position: absolute;
    top: -10px;
    right: 16px;
    padding: 2px 10px;
    background: var(--color-success);
    color: var(--color-bg);
    border-radius: 999px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline-date {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--color-primary-hover);
    font-weight: 600;
    font-family: var(--font-mono);
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-content h4 {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: 12px;
}

.timeline-content ul {
    padding-left: 0;
}

.timeline-content li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 6px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.timeline-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* Education */
.education-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 24px 32px;
    max-width: 500px;
    margin: 0 auto;
}

.edu-icon {
    font-size: 2.5rem;
}

.edu-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.edu-content p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ===== VALUE PROP SECTION ===== */
.value-prop {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.value-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.value-text .section-tag {
    text-align: left;
}

.value-text .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.value-text p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.value-cards {
    display: grid;
    gap: 20px;
}

.value-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 28px;
    transition: var(--transition);
}

.value-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.value-number {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
    margin-bottom: 8px;
}

.value-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.value-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--color-bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.contact-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.contact-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.contact-cta {
    text-align: center;
    padding: 48px;
    background: linear-gradient(135deg, var(--color-primary-glow) 0%, transparent 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--border-radius);
}

.contact-cta p {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

/* ===== FOOTER ===== */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
}

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

.footer-content p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary-hover);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes scrollDown {
    0% {
        opacity: 0;
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        opacity: 1;
        transform: scaleY(1);
        transform-origin: top;
    }
    100% {
        opacity: 0;
        transform: scaleY(1);
        transform-origin: bottom;
    }
}

/* Scroll reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .about-grid,
    .value-grid {
        grid-template-columns: 1fr;
    }

    .about-card {
        position: static;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-card.featured {
        grid-column: span 1;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    /* Mobile nav */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 24px;
        border-left: 1px solid var(--color-border);
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .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);
    }

    /* Hero responsive */
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    /* Skills responsive */
    .skills-grid {
        grid-template-columns: 1fr;
    }

    /* Contact responsive */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    /* Footer responsive */
    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    /* Timeline */
    .timeline {
        padding-left: 32px;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-marker {
        left: -28px;
        width: 12px;
        height: 12px;
    }

    .project-metrics {
        flex-direction: column;
        gap: 12px;
    }

    /* Avatar responsive */
    .avatar-img {
        width: 110px;
        height: 110px;
    }

    /* Lang switcher mobile */
    .lang-switcher {
        padding: 3px 6px;
    }

    .lang-btn {
        padding: 3px 8px;
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}