/* ========================
   CSS CUSTOM PROPERTIES
   ======================== */
:root {
    /* Dark theme (default) */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a2035;
    --bg-card-hover: #1e2a45;
    --bg-nav: rgba(10, 14, 26, 0.85);
    --text-primary: #f0f4ff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --gradient-start: #6366f1;
    --gradient-end: #a855f7;
    --border: rgba(148, 163, 184, 0.1);
    --border-hover: rgba(99, 102, 241, 0.4);
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 8px 40px rgba(99, 102, 241, 0.15);
    --code-bg: #0d1117;
    --section-alt-bg: #0d1320;
    --tag-bg: rgba(99, 102, 241, 0.1);
    --timeline-line: rgba(99, 102, 241, 0.2);
    --scrollbar-bg: #111827;
    --scrollbar-thumb: #6366f1;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-nav: rgba(248, 250, 252, 0.9);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent: #4f46e5;
    --accent-light: #6366f1;
    --accent-glow: rgba(79, 70, 229, 0.15);
    --gradient-start: #4f46e5;
    --gradient-end: #7c3aed;
    --border: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(79, 70, 229, 0.3);
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 8px 40px rgba(79, 70, 229, 0.1);
    --code-bg: #f1f5f9;
    --section-alt-bg: #f1f5f9;
    --tag-bg: rgba(79, 70, 229, 0.08);
    --timeline-line: rgba(79, 70, 229, 0.15);
    --scrollbar-bg: #e2e8f0;
    --scrollbar-thumb: #4f46e5;
}

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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-bg);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background 0.4s ease, color 0.4s ease;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

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

::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

/* ========================
   UTILITY CLASSES
   ======================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.highlight {
    color: var(--accent-light);
    font-weight: 600;
}

/* ========================
   NAVBAR
   ======================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border);
    transition: all 0.4s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 2px;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
    background: var(--tag-bg);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

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

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

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

.hero-bg-effects {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-start);
    top: -10%;
    right: -5%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--gradient-end);
    bottom: -10%;
    left: -5%;
    animation-delay: -3s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: #06b6d4;
    top: 50%;
    left: 40%;
    animation-delay: -5s;
    opacity: 0.2;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -20px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--tag-bg);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 24px;
}

.hero-badge i {
    font-size: 0.8rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.highlight-mobile {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent);
    border-radius: 6px;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 580px;
}

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

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

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

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--tag-bg);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

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

/* Code Window */
.code-window {
    background: var(--code-bg);
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.code-window:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}

.code-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red {
    background: #ef4444;
}

.dot.yellow {
    background: #f59e0b;
}

.dot.green {
    background: #22c55e;
}

.code-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.code-body {
    padding: 24px;
    overflow-x: auto;
}

.code-body pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.7;
}

.code-keyword {
    color: #c678dd;
}

.code-variable {
    color: #e5c07b;
}

.code-property {
    color: #61afef;
}

.code-string {
    color: #98c379;
}

.code-method {
    color: #61afef;
}

[data-theme="light"] .code-keyword {
    color: #7c3aed;
}

[data-theme="light"] .code-variable {
    color: #b45309;
}

[data-theme="light"] .code-property {
    color: #2563eb;
}

[data-theme="light"] .code-string {
    color: #16a34a;
}

[data-theme="light"] .code-method {
    color: #2563eb;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
    z-index: 1;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ========================
   SECTIONS COMMON
   ======================== */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--section-alt-bg);
}

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

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--tag-bg);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

/* ========================
   ABOUT SECTION
   ======================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 1.05rem;
}

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

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    gap: 14px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

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

.highlight-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--tag-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.highlight-item h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.highlight-item p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Tech Orbit Animation */
.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.tech-orbit {
    position: relative;
    width: 350px;
    height: 350px;
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
    z-index: 2;
    box-shadow: 0 0 40px var(--accent-glow);
}

.orbit-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    border: 1px dashed var(--border);
}

.ring-1 {
    width: 220px;
    height: 220px;
    margin: -110px 0 0 -110px;
    animation: spin 20s linear infinite;
}

.ring-2 {
    width: 320px;
    height: 320px;
    margin: -160px 0 0 -160px;
    animation: spin 30s linear infinite reverse;
}

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

    to {
        transform: rotate(360deg);
    }
}

.orbit-item {
    position: absolute;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-light);
    top: 50%;
    left: 50%;
    box-shadow: var(--shadow);
}

.ring-1 .orbit-item {
    --radius: 110px;
    --angle: calc(var(--i) * 90deg);
    margin: -22px 0 0 -22px;
    transform: translate(calc(cos(var(--angle)) * var(--radius)),
            calc(sin(var(--angle)) * var(--radius))) rotate(calc(-1 * var(--angle)));
    animation: counter-spin 20s linear infinite;
}

.ring-2 .orbit-item {
    --radius: 160px;
    --angle: calc(var(--i) * 90deg + 45deg);
    margin: -22px 0 0 -22px;
    transform: translate(calc(cos(var(--angle)) * var(--radius)),
            calc(sin(var(--angle)) * var(--radius))) rotate(calc(var(--angle)));
    animation: counter-spin 30s linear infinite reverse;
}

@keyframes counter-spin {
    from {
        transform: translate(calc(cos(var(--angle)) * var(--radius)),
                calc(sin(var(--angle)) * var(--radius))) rotate(0deg);
    }

    to {
        transform: translate(calc(cos(var(--angle)) * var(--radius)),
                calc(sin(var(--angle)) * var(--radius))) rotate(-360deg);
    }
}

/* ========================
   SKILLS SECTION
   ======================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.skill-category {
    padding: 28px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.skill-category:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.skill-category-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
}

.skill-category h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.skill-category.span-2 {
    grid-column: span 2;
}

/* Visual Skill Cards (AI, DB, Automation) */
.skill-visual-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.skill-visual-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: all 0.3s ease;
}

.skill-visual-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.skill-visual-icon {
    font-size: 1.8rem;
}

.skill-visual-icon.purple {
    color: #a855f7;
    filter: drop-shadow(0 0 8px rgba(168, 85, 247, 0.4));
}

.skill-visual-icon.pink {
    color: #ec4899;
    filter: drop-shadow(0 0 8px rgba(236, 72, 153, 0.4));
}

.skill-visual-icon.blue {
    color: #3b82f6;
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.4));
}

.skill-visual-content h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.skill-visual-content p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.mt-16 {
    margin-top: 16px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 500;
    background: var(--tag-bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.skill-tag[data-color="yellow"] i {
    color: #f59e0b;
}

.skill-tag[data-color="blue"] i {
    color: #3b82f6;
}

.skill-tag[data-color="red"] i {
    color: #ef4444;
}

.skill-tag[data-color="orange"] i {
    color: #f97316;
}

.skill-tag[data-color="purple"] i {
    color: #a855f7;
}

.skill-tag[data-color="cyan"] i {
    color: #06b6d4;
}

.skill-tag[data-color="green"] i {
    color: #22c55e;
}

.skill-tag[data-color="indigo"] i {
    color: #6366f1;
}

.skill-tag[data-color="pink"] i {
    color: #ec4899;
}

/* ========================
   EXPERIENCE SECTION
   ======================== */
.experience-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.experience-card {
    position: relative;
    padding: 32px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.3s ease;
}

.experience-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.card-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
}

.experience-card.featured {
    border-color: var(--border-hover);
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.05));
}

.experience-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.experience-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--tag-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent);
}

.experience-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.experience-badge {
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--tag-bg);
    color: var(--accent);
    border: 1px solid var(--border);
}

.experience-badge.current {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    border-color: transparent;
}

.experience-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.experience-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.experience-role {
    font-size: 0.9rem;
    color: var(--accent-light);
    font-weight: 600;
    margin-bottom: 12px;
}

.experience-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

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

.experience-tech span {
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--tag-bg);
    color: var(--accent-light);
    border: 1px solid var(--border);
}

/* Projects Header */
.projects-header {
    text-align: center;
    margin-top: 24px;
}

.projects-header h3 {
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.projects-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

.github-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.project-card {
    padding: 24px;
    background: var(--bg-card);
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.project-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.project-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: var(--tag-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent);
    margin-bottom: 14px;
}

.project-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.project-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    line-height: 1.5;
}

.project-lang {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 50px;
    background: var(--tag-bg);
    color: var(--accent-light);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ========================
   CTA SECTION
   ======================== */
.cta-section {
    padding: 60px 0 100px;
}

.cta-box {
    background: linear-gradient(135deg, var(--bg-card), var(--tag-bg));
    border: 1px solid var(--border-hover);
    border-radius: 24px;
    padding: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: var(--gradient-end);
    filter: blur(100px);
    opacity: 0.15;
    border-radius: 50%;
}

.cta-content {
    flex: 1;
    max-width: 600px;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

.cta-btn {
    flex-shrink: 0;
    padding: 16px 32px;
    font-size: 1.05rem;
}

/* ========================
   CERTIFICATES / TIMELINE
   ======================== */
.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--timeline-line);
}

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

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

.timeline-dot {
    position: absolute;
    left: -33px;
    top: 4px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.85rem;
    z-index: 1;
    box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-content {
    padding: 28px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-hover);
    transform: translateX(5px);
}

.timeline-date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.timeline-org {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
}

.timeline-content>p:last-of-type {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.timeline-tags span {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--tag-bg);
    color: var(--accent-light);
}

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

.contact-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 32px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.contact-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--tag-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-card h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2px;
}

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

.social-links {
    display: flex;
    gap: 14px;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--accent-glow);
}

.social-link.linkedin:hover {
    background: #0077b5;
    color: #fff;
    border-color: #0077b5;
}

.social-link.github:hover {
    background: #333;
    color: #fff;
    border-color: #333;
}

.social-link.email:hover {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    border-color: transparent;
}

/* Contact Form */
.contact-form-wrapper {
    padding: 32px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group label {
    position: absolute;
    top: 14px;
    left: 18px;
    font-size: 0.9rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: all 0.3s ease;
    opacity: 0;
}

.form-group input:focus+label,
.form-group textarea:focus+label,
.form-group input:not(:placeholder-shown)+label,
.form-group textarea:not(:placeholder-shown)+label {
    top: -10px;
    left: 14px;
    font-size: 0.75rem;
    color: var(--accent);
    background: var(--bg-card);
    padding: 0 6px;
    opacity: 1;
}

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

/* ========================
   FOOTER
   ======================== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

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

.footer-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    font-weight: 700;
}

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

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

/* ========================
   REVEAL ANIMATIONS
   ======================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ========================
   RESPONSIVE DESIGN
   ======================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .tech-orbit {
        width: 280px;
        height: 280px;
    }

    .ring-1 {
        width: 180px;
        height: 180px;
        margin: -90px 0 0 -90px;
    }

    .ring-2 {
        width: 260px;
        height: 260px;
        margin: -130px 0 0 -130px;
    }

    .ring-1 .orbit-item {
        --radius: 90px;
    }

    .ring-2 .orbit-item {
        --radius: 130px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-nav);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        opacity: 0;
        transition: all 0.4s ease;
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-link {
        padding: 12px 16px;
        font-size: 1rem;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

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

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

    .skill-category.span-2 {
        grid-column: span 1;
    }

    .skill-visual-cards {
        grid-template-columns: 1fr;
    }

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

    .cta-box {
        flex-direction: column;
        text-align: center;
        padding: 40px 24px;
    }

    .cta-content {
        max-width: 100%;
    }

    .experience-card {
        padding: 24px;
    }

    .experience-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline-dot {
        left: -27px;
        width: 30px;
        height: 30px;
        font-size: 0.75rem;
    }

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

    .section {
        padding: 70px 0;
    }

    .tech-orbit {
        width: 220px;
        height: 220px;
    }

    .orbit-center {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .ring-1 {
        width: 140px;
        height: 140px;
        margin: -70px 0 0 -70px;
    }

    .ring-2 {
        width: 200px;
        height: 200px;
        margin: -100px 0 0 -100px;
    }

    .ring-1 .orbit-item {
        --radius: 70px;
    }

    .ring-2 .orbit-item {
        --radius: 100px;
    }

    .orbit-item {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        font-size: 1rem;
    }

    .ring-1 .orbit-item,
    .ring-2 .orbit-item {
        margin: -18px 0 0 -18px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

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

    .code-window {
        display: none;
    }
}