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

:root {
    --bg: #0a0a0f;
    --surface: #111118;
    --surface-2: #16161f;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text: #e8e8ed;
    --text-secondary: #6b6b80;
    --text-muted: #3e3e50;
    --blue: #4f8ff7;
    --blue-glow: rgba(79, 143, 247, 0.12);
    --green: #34d399;
    --green-glow: rgba(52, 211, 153, 0.12);
    --purple: #a78bfa;
    --purple-glow: rgba(167, 139, 250, 0.12);
    --orange: #fb923c;
    --orange-glow: rgba(251, 146, 60, 0.12);
    --cyan: #22d3ee;
    --cyan-glow: rgba(34, 211, 238, 0.12);
    --pink: #f472b6;
    --pink-glow: rgba(244, 114, 182, 0.12);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* =========================================
   Noise & gradient background
   ========================================= */

.noise {
    position: fixed;
    inset: 0;
    z-index: 100;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px;
}

.gradient-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.2;
    animation: float 20s ease-in-out infinite;
}

.gradient-orb--1 {
    width: 600px; height: 600px;
    background: var(--blue);
    top: -200px; right: -100px;
}

.gradient-orb--2 {
    width: 500px; height: 500px;
    background: var(--purple);
    bottom: -150px; left: -100px;
    animation-delay: -7s;
}

.gradient-orb--3 {
    width: 400px; height: 400px;
    background: var(--green);
    top: 50%; left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(80px, -60px) scale(1.1); }
    50% { transform: translate(-40px, 80px) scale(0.95); }
    75% { transform: translate(60px, 40px) scale(1.05); }
}

/* =========================================
   Header
   ========================================= */

.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 48px;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    background: rgba(10, 10, 15, 0.6);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo__icon {
    font-size: 24px;
    color: var(--blue);
    animation: spin-slow 12s linear infinite;
}

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

.logo__text {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--text-secondary);
}

.logo__accent { color: var(--text); }

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

.nav__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 1px;
    background: var(--text);
    transition: width 0.3s;
}

.nav__link:hover { color: var(--text); }
.nav__link:hover::after { width: 100%; }

.nav__link--cta {
    padding: 8px 20px;
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text);
    transition: all 0.3s;
}

.nav__link--cta::after { display: none; }

.nav__link--cta:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

/* =========================================
   Section label (reusable)
   ========================================= */

.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--blue);
    padding: 5px 14px;
    border: 1px solid rgba(79, 143, 247, 0.2);
    border-radius: 100px;
    display: inline-block;
    margin-bottom: 20px;
}

/* =========================================
   Hero
   ========================================= */

.hero {
    position: relative;
    z-index: 1;
    padding: 200px 48px 100px;
    max-width: 860px;
}

.hero__greeting {
    display: block;
    font-size: 18px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeUp 0.7s 0.1s forwards;
}

.hero__title {
    font-size: clamp(48px, 7vw, 88px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -3px;
    margin-bottom: 28px;
}

.hero__line {
    display: block;
    opacity: 0;
    animation: fadeUp 0.7s forwards;
}

.hero__line:nth-child(1) { animation-delay: 0.2s; }
.hero__line:nth-child(2) { animation-delay: 0.35s; }
.hero__line:nth-child(3) { animation-delay: 0.5s; }

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

.hero__subtitle {
    font-size: 17px;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 520px;
    opacity: 0;
    animation: fadeUp 0.7s 0.65s forwards;
}

.hero__actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 36px;
    opacity: 0;
    animation: fadeUp 0.7s 0.8s forwards;
}

.hero__btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: 100px;
    text-decoration: none;
    transition: all var(--transition);
    background: var(--blue);
    color: #fff;
    border: none;
}

.hero__btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(79, 143, 247, 0.25);
}

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

.hero__btn--ghost:hover {
    border-color: var(--border-hover);
    color: var(--text);
    background: rgba(255, 255, 255, 0.03);
    box-shadow: none;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   About
   ========================================= */

.about {
    position: relative;
    z-index: 1;
    padding: 120px 48px;
    max-width: 1100px;
    margin: 0 auto;
}

.about__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
    margin-top: 8px;
}

.about__text p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about__text p:last-child { margin-bottom: 0; }

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px;
    text-align: center;
    transition: all var(--transition);
}

.stat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.stat-card__number {
    display: block;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--text);
    margin-bottom: 4px;
}

.stat-card__label {
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* =========================================
   Projects
   ========================================= */

.projects {
    position: relative;
    z-index: 1;
    padding: 80px 48px 120px;
    max-width: 1400px;
    margin: 0 auto;
}

.projects__heading {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: 8px;
}

.projects__sub {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 480px;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

/* Project card */

.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: all var(--transition);
    min-height: 420px;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--transition);
    border-radius: var(--radius);
    pointer-events: none;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 60px -16px rgba(0, 0, 0, 0.5);
}

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

.project-card[data-color="blue"]::before { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--blue-glow), transparent 60%); }
.project-card[data-color="green"]::before { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--green-glow), transparent 60%); }
.project-card[data-color="orange"]::before { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--orange-glow), transparent 60%); }
.project-card[data-color="cyan"]::before { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--cyan-glow), transparent 60%); }
.project-card[data-color="purple"]::before { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--purple-glow), transparent 60%); }
.project-card[data-color="pink"]::before { background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--pink-glow), transparent 60%); }

.project-card[data-color="blue"]:hover { border-color: rgba(79, 143, 247, 0.25); }
.project-card[data-color="green"]:hover { border-color: rgba(52, 211, 153, 0.25); }
.project-card[data-color="orange"]:hover { border-color: rgba(251, 146, 60, 0.25); }
.project-card[data-color="cyan"]:hover { border-color: rgba(34, 211, 238, 0.25); }
.project-card[data-color="purple"]:hover { border-color: rgba(167, 139, 250, 0.25); }
.project-card[data-color="pink"]:hover { border-color: rgba(244, 114, 182, 0.25); }

.project-card__header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 24px;
}

.project-card__icon {
    width: 44px;
    height: 44px;
    transition: transform var(--transition);
}

.project-card[data-color="blue"] .project-card__icon { color: var(--blue); }
.project-card[data-color="green"] .project-card__icon { color: var(--green); }
.project-card[data-color="orange"] .project-card__icon { color: var(--orange); }
.project-card[data-color="cyan"] .project-card__icon { color: var(--cyan); }
.project-card[data-color="purple"] .project-card__icon { color: var(--purple); }
.project-card[data-color="pink"] .project-card__icon { color: var(--pink); }

.project-card:hover .project-card__icon {
    transform: scale(1.1) rotate(-5deg);
}

.project-card__num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-muted);
}

.project-card__title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.5px;
    margin-bottom: 10px;
    transition: color var(--transition);
}

.project-card[data-color="blue"]:hover .project-card__title { color: var(--blue); }
.project-card[data-color="green"]:hover .project-card__title { color: var(--green); }
.project-card[data-color="orange"]:hover .project-card__title { color: var(--orange); }
.project-card[data-color="cyan"]:hover .project-card__title { color: var(--cyan); }

.project-card__desc {
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-secondary);
    flex: 1;
}

.project-card__footer {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-top: auto;
    padding-top: 24px;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-card__tags span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 5px 12px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    transition: background var(--transition);
}

.project-card:hover .project-card__tags span {
    background: rgba(255, 255, 255, 0.07);
}

.project-card__arrow {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(8px);
    align-self: flex-end;
}

.project-card__arrow svg {
    width: 18px;
    height: 18px;
}

.project-card:hover .project-card__arrow {
    opacity: 1;
    transform: translateY(0);
}

.project-card[data-color="blue"]:hover .project-card__arrow { background: var(--blue-glow); color: var(--blue); }
.project-card[data-color="green"]:hover .project-card__arrow { background: var(--green-glow); color: var(--green); }
.project-card[data-color="orange"]:hover .project-card__arrow { background: var(--orange-glow); color: var(--orange); }
.project-card[data-color="cyan"]:hover .project-card__arrow { background: var(--cyan-glow); color: var(--cyan); }


/* =========================================
   AI Section
   ========================================= */

.ai-section {
    position: relative;
    z-index: 1;
    padding: 80px 48px 100px;
}

.ai-section__inner {
    max-width: 760px;
    margin: 0 auto;
}

.ai-section__heading {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.1;
    margin-bottom: 32px;
    background: linear-gradient(135deg, var(--purple), var(--blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ai-section__content {
    margin-bottom: 36px;
}

.ai-section__content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.ai-section__content p:last-child {
    margin-bottom: 0;
}

.ai-section__tools {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.ai-section__tool {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 8px 18px;
    border-radius: 100px;
    border: 1px solid rgba(167, 139, 250, 0.2);
    background: rgba(167, 139, 250, 0.06);
    color: var(--purple);
    transition: all 0.3s;
}

.ai-section__tool:hover {
    border-color: rgba(167, 139, 250, 0.4);
    background: rgba(167, 139, 250, 0.12);
    transform: translateY(-2px);
}

/* =========================================
   CTA
   ========================================= */

.cta {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 120px 48px;
    max-width: 700px;
    margin: 0 auto;
}

.cta__title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta__text {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.6;
}

.cta__btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 600;
    padding: 16px 36px;
    border-radius: 100px;
    background: var(--text);
    color: var(--bg);
    text-decoration: none;
    transition: all var(--transition);
}

.cta__btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(232, 232, 237, 0.15);
}

.cta__btn svg {
    transition: transform 0.3s;
}

.cta__btn:hover svg {
    transform: translateX(4px);
}

/* =========================================
   Footer
   ========================================= */

.footer {
    position: relative;
    z-index: 1;
    padding: 0 48px 48px;
}

.footer__line {
    width: 100%;
    height: 1px;
    background: var(--border);
    margin-bottom: 24px;
}

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

.footer__copy {
    font-size: 13px;
    color: var(--text-secondary);
}

.footer__links {
    display: flex;
    gap: 24px;
}

.footer__link {
    font-size: 13px;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer__link:hover {
    color: var(--text-secondary);
}

/* =========================================
   Scroll reveal
   ========================================= */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* =========================================
   Responsive
   ========================================= */

@media (max-width: 1000px) {
    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about__stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1200px) {
    .projects__grid { grid-template-columns: repeat(2, 1fr); }
    .project-card { min-height: 360px; }
}

@media (max-width: 768px) {
    .header { padding: 16px 24px; }
    .hero { padding: 160px 24px 80px; }
    .hero__title { letter-spacing: -2px; }
    .hero__logo-bg { width: 320px; height: 320px; }

    .projects { padding: 60px 24px 100px; }
    .projects__grid { grid-template-columns: 1fr; }
    .project-card { min-height: 300px; }

    .about { padding: 80px 24px; }
    .about__stats { grid-template-columns: 1fr 1fr; }

    .ai-section { padding: 60px 24px 80px; }

    .cta { padding: 80px 24px; }

    .footer { padding: 0 24px 32px; }
    .nav { gap: 16px; }
    .nav__link:not(.nav__link--cta) { display: none; }
}

@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero__btn {
        justify-content: center;
    }
    .about__stats {
        grid-template-columns: 1fr 1fr;
    }
    .footer__content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}