/* ==========================================================================
   Atik Shahriar — Portfolio
   ========================================================================== */

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

:root {
    --bg: #07070d;
    --bg-2: #0c0c16;
    --surface: rgba(255, 255, 255, 0.035);
    --surface-2: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);

    --text: #ecebf5;
    --text-2: #a8a7bd;
    --text-3: #6f6e86;

    --violet: #7c5cff;
    --violet-rgb: 124, 92, 255;
    --cyan: #22d3ee;
    --cyan-rgb: 34, 211, 238;
    --pink: #f472b6;
    --pink-rgb: 244, 114, 182;
    --green: #34d399;
    --green-rgb: 52, 211, 153;
    --amber: #fbbf24;
    --amber-rgb: 251, 191, 36;

    --grad: linear-gradient(120deg, #a78bfa 0%, #7c5cff 30%, #22d3ee 70%, #34d399 100%);
    --grad-btn: linear-gradient(135deg, #8b6cff 0%, #6d4dff 50%, #4f7cff 100%);

    --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, monospace;

    --radius: 16px;
    --radius-lg: 24px;
    --container: 1200px;
    --nav-h: 72px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --shadow-lg: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Subtle film grain across the whole page */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
::selection { background: rgba(var(--violet-rgb), 0.45); color: #fff; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
    position: absolute; left: 16px; top: -60px; z-index: 1000;
    background: var(--violet); color: #fff; padding: 10px 16px; border-radius: 8px; font-weight: 600;
    transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

.gradient-text {
    background: var(--grad);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: shine 8s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }

.mono { font-family: var(--font-mono); }

/* Scroll progress + cursor glow */
.scroll-progress {
    position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 1001;
    background: var(--grad); transform-origin: 0 50%; transform: scaleX(0);
}
.cursor-glow {
    position: fixed; top: 0; left: 0; width: 520px; height: 520px; z-index: 0;
    border-radius: 50%; pointer-events: none;
    background: radial-gradient(circle, rgba(var(--violet-rgb), 0.10), transparent 60%);
    transform: translate(-50%, -50%); opacity: 0; transition: opacity 0.4s;
}
@media (hover: hover) and (pointer: fine) { body.has-pointer .cursor-glow { opacity: 1; } }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 12px 22px; border-radius: 999px;
    font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em; white-space: nowrap;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, border-color 0.25s;
    position: relative; isolation: isolate;
}
.btn-sm { padding: 9px 18px; font-size: 0.875rem; }
.btn-lg { padding: 15px 28px; font-size: 1rem; }
.btn-primary {
    background: var(--grad-btn); color: #fff;
    box-shadow: 0 10px 30px -10px rgba(var(--violet-rgb), 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(var(--violet-rgb), 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
.btn-ghost {
    background: var(--surface); border: 1px solid var(--border-strong); color: var(--text);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.btn-ghost:hover { background: var(--surface-2); border-color: rgba(255, 255, 255, 0.3); transform: translateY(-2px); }
.btn i { font-size: 0.9em; transition: transform 0.25s var(--ease); }
.btn:hover .fa-arrow-right { transform: translateX(3px); }

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 900; height: var(--nav-h);
    display: flex; align-items: center;
    transition: background 0.3s, border-color 0.3s;
    border-bottom: 1px solid transparent;
}
.navbar.scrolled {
    background: rgba(7, 7, 13, 0.72);
    backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom-color: var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-brand { display: inline-flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; }
.brand-mark {
    display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
    background: var(--grad-btn); color: #fff; font-size: 0.95rem; letter-spacing: 0.02em;
    box-shadow: 0 8px 20px -8px rgba(var(--violet-rgb), 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.brand-name { font-size: 1.05rem; letter-spacing: -0.01em; }

.nav-menu { display: flex; align-items: center; gap: 4px; padding: 6px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.nav-menu a {
    display: block; padding: 7px 16px; border-radius: 999px; font-size: 0.9rem; font-weight: 500; color: var(--text-2);
    transition: color 0.2s, background 0.2s;
}
.nav-menu a:hover { color: var(--text); }
.nav-menu a.active { color: var(--text); background: var(--surface-2); }
.nav-menu-cta { display: none; }

.hamburger { display: none; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); position: relative; }
.hamburger span { position: absolute; left: 12px; right: 12px; height: 2px; border-radius: 2px; background: var(--text); transition: transform 0.3s var(--ease), opacity 0.2s; }
.hamburger span:nth-child(1) { top: 14px; }
.hamburger span:nth-child(2) { top: 20px; }
.hamburger span:nth-child(3) { top: 26px; }
.hamburger.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55); z-index: 850; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
.nav-backdrop.active { opacity: 1; pointer-events: auto; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: calc(var(--nav-h) + 40px) 0 90px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.aurora { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.55; will-change: transform; }
.aurora-1 { width: 620px; height: 620px; background: radial-gradient(circle, rgba(var(--violet-rgb), 0.9), transparent 65%); top: -180px; left: -160px; animation: drift1 18s ease-in-out infinite alternate; }
.aurora-2 { width: 540px; height: 540px; background: radial-gradient(circle, rgba(var(--cyan-rgb), 0.55), transparent 65%); top: 10%; right: -180px; animation: drift2 22s ease-in-out infinite alternate; }
.aurora-3 { width: 480px; height: 480px; background: radial-gradient(circle, rgba(var(--pink-rgb), 0.45), transparent 65%); bottom: -220px; left: 35%; animation: drift3 20s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(120px, 80px) scale(1.1); } }
@keyframes drift2 { to { transform: translate(-100px, 120px) scale(0.95); } }
@keyframes drift3 { to { transform: translate(-80px, -100px) scale(1.15); } }
.grid-overlay {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 85%);
    mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 85%);
}

.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 64px; align-items: center; }

.status-pill {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 7px 14px 7px 12px; border-radius: 999px; margin-bottom: 28px;
    background: rgba(var(--green-rgb), 0.08); border: 1px solid rgba(var(--green-rgb), 0.25);
    color: #a7f3d0; font-size: 0.85rem; font-weight: 500;
}
.pulse-dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(var(--green-rgb), 0.7); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(var(--green-rgb), 0); } 100% { box-shadow: 0 0 0 0 rgba(var(--green-rgb), 0); } }

.hero-title {
    font-family: var(--font-display); font-weight: 700;
    font-size: clamp(2.4rem, 5.4vw, 4.4rem); line-height: 1.03; letter-spacing: -0.035em;
    margin-bottom: 24px;
}
.hero-role { font-size: clamp(1.05rem, 1.8vw, 1.3rem); color: var(--text-2); margin-bottom: 20px; min-height: 1.6em; }
.hero-role .mono { color: var(--cyan); margin-right: 6px; }
.typed { color: var(--text); font-weight: 600; }
.caret { display: inline-block; width: 2px; height: 1.1em; margin-left: 3px; vertical-align: -0.15em; background: var(--cyan); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-bio { color: var(--text-2); max-width: 600px; font-size: 1.04rem; margin-bottom: 36px; }
.hero-bio strong { color: var(--text); font-weight: 600; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.hero-socials { display: flex; gap: 10px; }
.social-link {
    display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px;
    background: var(--surface); border: 1px solid var(--border); color: var(--text-2);
    transition: all 0.25s var(--ease);
}
.social-link:hover { color: #fff; border-color: rgba(var(--violet-rgb), 0.6); background: rgba(var(--violet-rgb), 0.15); transform: translateY(-3px); }
.hero-location { color: var(--text-3); font-size: 0.9rem; display: inline-flex; align-items: center; gap: 8px; }

/* Portrait */
.hero-visual { position: relative; justify-self: center; width: min(100%, 380px); }
.portrait { position: relative; aspect-ratio: 4 / 5; border-radius: 28px; padding: 2px; }
.portrait-border { position: absolute; inset: 0; border-radius: inherit; overflow: hidden; }
.portrait-border::before {
    content: ''; position: absolute; inset: -50%;
    background: conic-gradient(from 0deg, var(--violet), var(--cyan), var(--green), var(--pink), var(--violet));
    animation: spin 8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.portrait::after {
    content: ''; position: absolute; inset: -30px; z-index: -1; border-radius: 40px;
    background: radial-gradient(circle at 50% 50%, rgba(var(--violet-rgb), 0.45), transparent 70%); filter: blur(30px);
}
.portrait-img {
    display: block;
    position: relative; width: 100%; height: 100%; object-fit: cover; object-position: center 20%;
    border-radius: 26px; background: #1a1a26;
}
.float-chip {
    position: absolute; display: flex; align-items: center; gap: 12px;
    padding: 10px 16px 10px 10px; border-radius: 16px;
    background: rgba(17, 17, 28, 0.8); border: 1px solid var(--border-strong);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    box-shadow: var(--shadow-lg); white-space: nowrap;
    animation: float 6s ease-in-out infinite;
}
.float-chip strong { display: block; font-size: 0.9rem; line-height: 1.2; }
.float-chip small { color: var(--text-3); font-size: 0.75rem; }
.chip-1 { top: 10%; left: -70px; }
.chip-2 { top: 46%; right: -60px; animation-delay: -2s; }
.chip-3 { bottom: 6%; left: -40px; animation-delay: -4s; }
@keyframes float { 50% { transform: translateY(-10px); } }
.chip-icon {
    display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px;
    background: rgba(var(--violet-rgb), 0.18); color: #c4b5fd; font-size: 0.85rem;
}
.chip-icon-green { background: rgba(var(--green-rgb), 0.15); color: var(--green); }
.chip-icon-pink { background: rgba(var(--pink-rgb), 0.15); color: var(--pink); }

.scroll-cue { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 1; opacity: 0.6; transition: opacity 0.2s; }
.scroll-cue:hover { opacity: 1; }
.mouse { display: block; width: 24px; height: 38px; border: 2px solid var(--text-3); border-radius: 14px; position: relative; }
.wheel { position: absolute; top: 7px; left: 50%; width: 3px; height: 7px; margin-left: -1.5px; border-radius: 2px; background: var(--text-2); animation: wheel 1.8s infinite; }
@keyframes wheel { 0% { opacity: 1; transform: translateY(0); } 100% { opacity: 0; transform: translateY(12px); } }

/* ==========================================================================
   Marquee
   ========================================================================== */
.marquee {
    position: relative; overflow: hidden; padding: 22px 0;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    background: var(--bg-2);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; gap: 48px; width: max-content; animation: marquee 40s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { display: inline-flex; align-items: center; gap: 10px; color: var(--text-2); font-family: var(--font-display); font-weight: 500; font-size: 1.05rem; white-space: nowrap; }
.marquee-track i { color: var(--text-3); }
@keyframes marquee { to { transform: translateX(calc(-50% - 24px)); } }

/* ==========================================================================
   Sections
   ========================================================================== */
.section { position: relative; padding: 120px 0; }
.section-header { margin-bottom: 56px; max-width: 760px; }
.eyebrow {
    display: inline-block; font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--cyan); margin-bottom: 16px;
}
.section-title { font-family: var(--font-display); font-weight: 700; font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.08; letter-spacing: -0.03em; }
.section-sub { color: var(--text-2); margin-top: 16px; font-size: 1.05rem; max-width: 620px; }

.card-icon {
    flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px;
    background: rgba(var(--violet-rgb), 0.14); color: #b5a4ff; border: 1px solid rgba(var(--violet-rgb), 0.25);
}
.card-icon-green { background: rgba(var(--green-rgb), 0.12); color: var(--green); border-color: rgba(var(--green-rgb), 0.25); }
.card-icon-pink { background: rgba(var(--pink-rgb), 0.12); color: var(--pink); border-color: rgba(var(--pink-rgb), 0.25); }
.card-icon-cyan { background: rgba(var(--cyan-rgb), 0.12); color: var(--cyan); border-color: rgba(var(--cyan-rgb), 0.25); }
.card-icon-amber { background: rgba(var(--amber-rgb), 0.12); color: var(--amber); border-color: rgba(var(--amber-rgb), 0.25); }
.card-icon-violet { background: rgba(167, 139, 250, 0.12); color: #c4b5fd; border-color: rgba(167, 139, 250, 0.25); }

/* Spotlight hover on cards (mouse position set from JS) */
.spot { position: relative; isolation: isolate; }
.spot::after {
    content: ''; position: absolute; inset: 0; border-radius: inherit; z-index: 2; pointer-events: none; opacity: 0; transition: opacity 0.3s;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.06), transparent 45%);
}
.spot:hover::after { opacity: 1; }

/* Reveal on scroll */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   About (bento)
   ========================================================================== */
.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.bento-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px;
    transition: border-color 0.3s;
}
.bento-card:hover { border-color: var(--border-strong); }
.bento-bio { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; gap: 16px; color: var(--text-2); }
.bento-bio .lead { color: var(--text); font-size: 1.2rem; font-weight: 500; line-height: 1.55; }
.bento-stat { display: flex; flex-direction: column; justify-content: space-between; gap: 18px; min-height: 160px; position: relative; overflow: hidden; }
.bento-stat::before { content: ''; position: absolute; width: 160px; height: 160px; border-radius: 50%; right: -60px; top: -60px; background: radial-gradient(circle, rgba(var(--glow, var(--violet-rgb)), 0.28), transparent 70%); }
.bento-stat:nth-of-type(3) { --glow: var(--cyan-rgb); }
.bento-stat:nth-of-type(4) { --glow: var(--green-rgb); }
.bento-stat:nth-of-type(5) { --glow: var(--pink-rgb); }
.stat-num { font-family: var(--font-display); font-size: clamp(2.4rem, 4vw, 3.2rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1; position: relative; }
.stat-label { color: var(--text-2); font-size: 0.92rem; position: relative; }
.bento-edu, .bento-focus { grid-column: span 2; display: flex; gap: 18px; align-items: flex-start; }
.bento-edu h3, .bento-focus h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; margin-bottom: 4px; }
.bento-edu p, .bento-focus p { color: var(--text-2); font-size: 0.95rem; }

/* ==========================================================================
   Projects — flagship showcase
   ========================================================================== */
.showcase { display: flex; flex-direction: column; gap: 28px; margin-bottom: 110px; }
.flagship {
    --accent-rgb: var(--violet-rgb);
    display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: stretch;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--border); border-radius: 28px; overflow: hidden;
    transition: border-color 0.4s, box-shadow 0.4s;
}
.flagship:hover { border-color: rgba(var(--accent-rgb), 0.45); box-shadow: 0 40px 80px -40px rgba(var(--accent-rgb), 0.55); }
.flagship:nth-child(even) { grid-template-columns: 0.9fr 1.1fr; }
.flagship:nth-child(even) .flagship-media { order: 2; }

.flagship-media {
    position: relative; padding: 40px; display: flex; align-items: center; justify-content: center; overflow: hidden; min-height: 340px;
    background:
        radial-gradient(120% 90% at 30% 20%, rgba(var(--accent-rgb), 0.38), transparent 60%),
        radial-gradient(90% 80% at 90% 100%, rgba(var(--accent2-rgb, var(--cyan-rgb)), 0.22), transparent 60%),
        #0d0d18;
}
.flagship-media::before {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 32px 32px;
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%); mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
}
.browser {
    position: relative; width: 100%; border-radius: 14px; overflow: hidden;
    background: #14141f; border: 1px solid var(--border-strong);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.7);
    transform: perspective(1400px) rotateY(-6deg) rotateX(3deg);
    transition: transform 0.6s var(--ease);
}
.flagship:nth-child(even) .browser { transform: perspective(1400px) rotateY(6deg) rotateX(3deg); }
.flagship:hover .browser { transform: perspective(1400px) rotateY(0) rotateX(0) translateY(-4px); }
.browser-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; background: #1b1b28; border-bottom: 1px solid var(--border); }
.browser-bar i { flex: none; width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.browser-bar i:nth-child(2) { background: #febc2e; }
.browser-bar i:nth-child(3) { background: #28c840; }
.browser-url { margin-left: 10px; flex: 1; min-width: 0; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); background: rgba(255, 255, 255, 0.05); padding: 4px 10px; border-radius: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.browser img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; }

/* Code-style cover for projects without a screenshot (APIs, mobile apps) */
.code-cover { padding: 22px 22px 26px; font-family: var(--font-mono); font-size: 0.8rem; line-height: 1.85; color: #c9c8de; aspect-ratio: 16 / 10; overflow: hidden; white-space: pre; }
.code-cover .k { color: #c792ea; }
.code-cover .s { color: #a5e3a0; }
.code-cover .f { color: #82aaff; }
.code-cover .c { color: #5f5e78; }
.code-cover .n { color: #f78c6c; }

.flagship-body { padding: 44px 44px 40px; display: flex; flex-direction: column; }
.flagship-kicker { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.badge {
    display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px;
    font-size: 0.7rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; white-space: nowrap;
    background: rgba(var(--accent-rgb, var(--violet-rgb)), 0.14); color: rgb(var(--accent-rgb, var(--violet-rgb)));
    border: 1px solid rgba(var(--accent-rgb, var(--violet-rgb)), 0.32);
}
.badge-live { background: rgba(var(--green-rgb), 0.12); color: var(--green); border-color: rgba(var(--green-rgb), 0.3); }
.badge-live::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.badge-muted { background: rgba(255, 255, 255, 0.06); color: var(--text-2); border-color: var(--border-strong); }
.flagship-title { font-family: var(--font-display); font-size: clamp(1.6rem, 2.6vw, 2.1rem); font-weight: 700; letter-spacing: -0.025em; line-height: 1.15; margin-bottom: 8px; }
.flagship-tagline { color: var(--text); font-weight: 500; margin-bottom: 14px; opacity: 0.92; }
.flagship-desc { color: var(--text-2); margin-bottom: 20px; }
.flagship-points { display: grid; gap: 9px; margin-bottom: 24px; }
.flagship-points li { display: flex; gap: 10px; color: var(--text-2); font-size: 0.94rem; }
.flagship-points li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 0.72rem; margin-top: 5px; color: rgb(var(--accent-rgb)); }
.flagship-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: auto; padding-top: 8px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
    padding: 5px 12px; border-radius: 999px; font-size: 0.8rem; font-weight: 500;
    background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border); color: var(--text-2);
}
.chip-strong { color: var(--text); border-color: rgba(var(--violet-rgb), 0.35); background: rgba(var(--violet-rgb), 0.1); }
.flagship .chips { margin-bottom: 26px; }

/* ==========================================================================
   Projects — all projects grid
   ========================================================================== */
.all-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 20px; }
.all-title { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em; display: flex; align-items: center; gap: 12px; }
.count-badge { font-family: var(--font-mono); font-size: 0.85rem; font-weight: 500; padding: 3px 10px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }
.search-box { position: relative; width: min(100%, 320px); }
.search-box i { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--text-3); font-size: 0.85rem; }
.search-box input {
    width: 100%; padding: 12px 16px 12px 42px; border-radius: 999px; font: inherit; font-size: 0.92rem;
    background: var(--surface); border: 1px solid var(--border); color: var(--text); transition: border-color 0.2s, background 0.2s;
}
.search-box input::placeholder { color: var(--text-3); }
.search-box input:focus { outline: none; border-color: rgba(var(--violet-rgb), 0.6); background: var(--surface-2); }

.project-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.filter-btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: 999px;
    font-size: 0.88rem; font-weight: 500; color: var(--text-2);
    background: var(--surface); border: 1px solid var(--border); transition: all 0.2s;
}
.filter-btn small { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); }
.filter-btn:hover { color: var(--text); border-color: var(--border-strong); }
.filter-btn.active { color: #fff; background: rgba(var(--violet-rgb), 0.2); border-color: rgba(var(--violet-rgb), 0.55); }
.filter-btn.active small { color: #c4b5fd; }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.project-card {
    --accent-rgb: var(--violet-rgb);
    display: flex; flex-direction: column; border-radius: var(--radius-lg); overflow: hidden;
    background: var(--surface); border: 1px solid var(--border);
    transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
    animation: cardIn 0.6s var(--ease) both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(16px); } }
.project-card:hover { transform: translateY(-6px); border-color: rgba(var(--accent-rgb), 0.45); box-shadow: 0 24px 50px -24px rgba(var(--accent-rgb), 0.5); }
.card-cover {
    position: relative; aspect-ratio: 16 / 9; overflow: hidden;
    background:
        radial-gradient(90% 120% at 0% 0%, rgba(var(--accent-rgb), 0.55), transparent 60%),
        radial-gradient(80% 100% at 100% 100%, rgba(var(--accent2-rgb, var(--cyan-rgb)), 0.35), transparent 60%),
        #0e0e19;
    border-bottom: 1px solid var(--border);
}
.card-cover img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.6s var(--ease); }
.project-card:hover .card-cover img { transform: scale(1.05); }
.cover-art { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.cover-art::before {
    content: ''; position: absolute; inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px); background-size: 18px 18px;
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 10%, transparent 75%); mask-image: radial-gradient(circle at 50% 50%, #000 10%, transparent 75%);
}
.cover-icon {
    position: relative; display: grid; place-items: center; width: 64px; height: 64px; border-radius: 18px; font-size: 1.6rem; color: #fff;
    background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: transform 0.5s var(--ease);
}
.project-card:hover .cover-icon { transform: scale(1.08) rotate(-4deg); }
.cover-lang { position: absolute; left: 14px; bottom: 12px; font-family: var(--font-mono); font-size: 0.72rem; color: rgba(255, 255, 255, 0.75); display: inline-flex; align-items: center; gap: 6px; }
.lang-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lang, #888); }
.cover-badges { position: absolute; top: 12px; left: 12px; right: 12px; display: flex; justify-content: space-between; gap: 8px; z-index: 1; }
.cover-badges .badge { backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); background: rgba(10, 10, 18, 0.7); }
.cover-badges .badge-live { background: rgba(6, 30, 22, 0.8); }

.card-body { padding: 22px 22px 20px; display: flex; flex-direction: column; flex: 1; }
.card-title { font-family: var(--font-display); font-size: 1.18rem; font-weight: 600; letter-spacing: -0.015em; line-height: 1.3; margin-bottom: 8px; }
.card-desc { color: var(--text-2); font-size: 0.92rem; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-body .chips { margin-bottom: 18px; gap: 6px; }
.card-body .chip { font-size: 0.74rem; padding: 3px 10px; }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 16px; border-top: 1px solid var(--border); }
.card-meta { display: flex; align-items: center; gap: 14px; color: var(--text-3); font-size: 0.8rem; }
.card-meta span { display: inline-flex; align-items: center; gap: 5px; }
.card-links { display: flex; gap: 8px; }
.icon-link {
    display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
    border: 1px solid var(--border); color: var(--text-2); background: rgba(255, 255, 255, 0.03); transition: all 0.2s;
}
.icon-link:hover { color: #fff; border-color: rgba(var(--violet-rgb), 0.6); background: rgba(var(--violet-rgb), 0.18); }

.grid-actions { display: flex; justify-content: center; margin-top: 40px; }
.grid-actions .btn[hidden] { display: none; }
.loading-projects, .no-projects { grid-column: 1 / -1; text-align: center; padding: 60px 0; color: var(--text-2); }
.spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--violet); border-radius: 50%; margin: 0 auto 14px; animation: spin 0.8s linear infinite; }

/* ==========================================================================
   Skills
   ========================================================================== */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.skill-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: border-color 0.3s, transform 0.4s var(--ease); }
.skill-card:hover { border-color: var(--border-strong); }
.skill-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.skill-head h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; }
.skill-card > p { color: var(--text-2); font-size: 0.93rem; margin-bottom: 18px; }

/* ==========================================================================
   Experience
   ========================================================================== */
.timeline { position: relative; padding-left: 36px; max-width: 900px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--violet), var(--cyan) 50%, rgba(255, 255, 255, 0.05)); border-radius: 2px; }
.timeline-item { position: relative; margin-bottom: 22px; }
.timeline-dot { position: absolute; left: -36px; top: 26px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 3px solid var(--violet); box-shadow: 0 0 0 5px rgba(var(--violet-rgb), 0.15); }
.timeline-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px 28px; transition: border-color 0.3s; }
.timeline-card:hover { border-color: var(--border-strong); }
.timeline-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px 16px; flex-wrap: wrap; margin-bottom: 4px; }
.timeline-top h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; letter-spacing: -0.01em; }
.timeline-date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--cyan); padding: 3px 10px; border-radius: 999px; background: rgba(var(--cyan-rgb), 0.08); border: 1px solid rgba(var(--cyan-rgb), 0.2); white-space: nowrap; }
.timeline-org { color: var(--text-3); font-size: 0.92rem; margin-bottom: 14px; }
.timeline-points { display: grid; gap: 8px; margin-bottom: 16px; }
.timeline-points:last-child { margin-bottom: 0; }
.timeline-points li { position: relative; padding-left: 18px; color: var(--text-2); font-size: 0.94rem; }
.timeline-points li::before { content: ''; position: absolute; left: 2px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--violet); }

/* ==========================================================================
   GitHub
   ========================================================================== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.stat-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px; position: relative; overflow: hidden; }
.stat-box i { color: var(--violet); margin-bottom: 18px; font-size: 1.1rem; }
.stat-box h3 { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; }
.stat-box p { color: var(--text-2); font-size: 0.9rem; }
.contrib-card { display: block; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; overflow-x: auto; transition: border-color 0.3s; }
.contrib-card:hover { border-color: var(--border-strong); }
.contrib-card img { min-width: 680px; width: 100%; filter: invert(1) hue-rotate(180deg) saturate(1.4) brightness(0.95); }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-wrap {
    display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px;
    padding: 56px; border-radius: 32px; position: relative; overflow: hidden;
    background:
        radial-gradient(80% 60% at 0% 0%, rgba(var(--violet-rgb), 0.22), transparent 60%),
        radial-gradient(60% 60% at 100% 100%, rgba(var(--cyan-rgb), 0.14), transparent 60%),
        var(--surface);
    border: 1px solid var(--border);
}
.contact-subtitle { color: var(--text-2); margin: 16px 0 32px; font-size: 1.05rem; }
.contact-list { display: grid; gap: 14px; }
.contact-list li { display: flex; align-items: center; gap: 14px; min-width: 0; }
.contact-list small { display: block; color: var(--text-3); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-list a, .contact-list div > span { color: var(--text); font-weight: 500; overflow-wrap: anywhere; }
.contact-list a:hover { color: var(--cyan); }

.contact-form { display: flex; flex-direction: column; gap: 18px; align-self: center; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { position: relative; }
.form-group input, .form-group textarea {
    width: 100%; padding: 22px 18px 10px; border-radius: 14px; font: inherit; font-size: 0.98rem; color: var(--text);
    background: rgba(7, 7, 13, 0.55); border: 1px solid var(--border-strong); resize: vertical; transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group textarea { min-height: 150px; }
.form-group label { position: absolute; left: 18px; top: 16px; color: var(--text-3); pointer-events: none; transition: all 0.2s var(--ease); font-size: 0.98rem; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: rgba(var(--violet-rgb), 0.7); box-shadow: 0 0 0 4px rgba(var(--violet-rgb), 0.15); }
.form-group input:focus + label, .form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label, .form-group textarea:not(:placeholder-shown) + label { top: 7px; font-size: 0.72rem; color: #b5a4ff; letter-spacing: 0.02em; }
.error-msg { display: none; color: #fb7185; font-size: 0.8rem; margin-top: 6px; }
.form-group.has-error input, .form-group.has-error textarea { border-color: rgba(251, 113, 133, 0.7); }
.form-group.has-error .error-msg { display: block; }
.btn-submit { align-self: flex-start; min-width: 200px; }
.btn-loading { display: none; }
.btn-submit.loading .btn-text { display: none; }
.btn-submit.loading .btn-loading { display: inline-flex; }
.spinner-sm { width: 18px; height: 18px; border: 2px solid rgba(255, 255, 255, 0.35); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }

/* ==========================================================================
   Footer, back-to-top, toast
   ========================================================================== */
.footer { border-top: 1px solid var(--border); padding: 36px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer p { color: var(--text-3); font-size: 0.88rem; }
.footer-links { display: flex; gap: 8px; }
.footer-links a { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; color: var(--text-2); border: 1px solid var(--border); transition: all 0.2s; }
.footer-links a:hover { color: #fff; border-color: rgba(var(--violet-rgb), 0.6); }

.back-to-top {
    position: fixed; right: 24px; bottom: 24px; z-index: 800; width: 46px; height: 46px; border-radius: 14px;
    background: rgba(17, 17, 28, 0.85); border: 1px solid var(--border-strong); color: var(--text);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    opacity: 0; transform: translateY(12px); pointer-events: none; transition: all 0.3s var(--ease);
}
.back-to-top.visible { opacity: 1; transform: none; pointer-events: auto; }
.back-to-top:hover { border-color: rgba(var(--violet-rgb), 0.6); }

.toast {
    position: fixed; left: 50%; bottom: 28px; z-index: 1000; display: flex; align-items: center; gap: 12px;
    max-width: calc(100% - 32px); padding: 14px 20px; border-radius: 14px;
    background: #15151f; border: 1px solid var(--border-strong); box-shadow: var(--shadow-lg);
    transform: translate(-50%, 160%); opacity: 0; visibility: hidden;
    transition: transform 0.4s var(--ease), opacity 0.3s, visibility 0.4s;
}
.toast i { color: var(--green); }
.toast.visible { transform: translate(-50%, 0); opacity: 1; visibility: visible; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1100px) {
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .chip-1 { left: -30px; }
    .chip-2 { right: -30px; }
    .chip-3 { left: -10px; }
}

@media (max-width: 960px) {
    :root { --nav-h: 64px; }
    .nav-cta { display: none; }
    .hamburger { display: block; z-index: 890; }
    /* backdrop-filter would make the navbar the containing block of the fixed menu panel */
    .navbar.scrolled { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(7, 7, 13, 0.94); }
    .nav-menu {
        position: fixed; top: 0; right: 0; bottom: 0; width: min(84vw, 320px); z-index: 880;
        flex-direction: column; align-items: stretch; gap: 4px; padding: calc(var(--nav-h) + 16px) 20px 24px;
        border-radius: 0; border: 0; border-left: 1px solid var(--border);
        background: rgba(10, 10, 18, 0.97);
        transform: translateX(100%); transition: transform 0.4s var(--ease); visibility: hidden;
    }
    .nav-menu.active { transform: none; visibility: visible; }
    .nav-menu a { padding: 14px 16px; font-size: 1.05rem; border-radius: 12px; }
    .nav-menu-cta { display: block; margin-top: 12px; }
    .nav-menu-cta .btn { display: flex; width: 100%; justify-content: center; padding: 14px; color: #fff; }

    .hero-inner { grid-template-columns: 1fr; gap: 56px; }
    .hero-visual { width: min(78%, 320px); }
    .br-desktop { display: none; }

    .section { padding: 90px 0; }
    .bento { grid-template-columns: repeat(2, 1fr); }
    .bento-bio { grid-row: auto; }
    .flagship, .flagship:nth-child(even) { grid-template-columns: 1fr; }
    .flagship:nth-child(even) .flagship-media { order: 0; }
    .flagship-media { min-height: 0; padding: 28px; }
    .flagship-body { padding: 30px 28px 32px; }
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-wrap { grid-template-columns: 1fr; padding: 40px 32px; gap: 40px; }
}

@media (max-width: 640px) {
    .container { padding: 0 16px; }
    .brand-name { display: none; }
    .hero { padding-top: calc(var(--nav-h) + 28px); }
    .status-pill { font-size: 0.78rem; }
    .hero-buttons .btn { flex: 1 1 100%; }
    .float-chip { padding: 8px 12px 8px 8px; gap: 8px; }
    .float-chip strong { font-size: 0.78rem; }
    .float-chip small { font-size: 0.68rem; }
    .chip-icon { width: 28px; height: 28px; font-size: 0.72rem; }
    .chip-1 { left: -22px; }
    .chip-2 { right: -26px; }
    .chip-3 { left: -16px; }
    .section { padding: 72px 0; }
    .section-header { margin-bottom: 40px; }
    .bento { grid-template-columns: 1fr 1fr; gap: 12px; }
    .bento-bio, .bento-edu, .bento-focus { grid-column: 1 / -1; }
    .bento-card { padding: 22px; }
    .bento-stat { min-height: 130px; }
    .showcase { margin-bottom: 80px; gap: 20px; }
    .flagship { border-radius: 22px; }
    .flagship-media { padding: 18px; }
    .browser, .flagship:nth-child(even) .browser { transform: none; }
    .flagship-body { padding: 24px 20px 26px; }
    .flagship-links .btn { flex: 1 1 auto; }
    .code-cover { font-size: 0.66rem; padding: 14px; }
    .search-box { width: 100%; }
    .project-filters { flex-wrap: nowrap; overflow-x: auto; margin: 0 -16px 24px; padding: 0 16px 4px; scrollbar-width: none; }
    .project-filters::-webkit-scrollbar { display: none; }
    .filter-btn { flex: none; }
    .projects-grid, .skills-grid { grid-template-columns: 1fr; }
    .stats-grid { gap: 12px; }
    .stat-box { padding: 20px; }
    .stat-box h3 { font-size: 1.9rem; }
    .contact-wrap { padding: 28px 20px; border-radius: 24px; }
    .form-row { grid-template-columns: 1fr; }
    .btn-submit { width: 100%; }
    .timeline { padding-left: 28px; }
    .timeline-dot { left: -28px; }
    .timeline::before { left: 6px; }
    .timeline-card { padding: 22px 20px; }
    .footer-inner { flex-direction: column; text-align: center; }
    .back-to-top { right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
    .js .reveal { opacity: 1; transform: none; }
}