/* ==========================================================================
   Najeeb Khan — Portfolio
   Modern dark design system: aurora background, glass surfaces, bento grids
   ========================================================================== */

:root {
  --bg: #05070a;
  --bg-2: #090c11;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.16);
  --text: #f4f6fa;
  --text-2: #a3adbb;
  --text-3: #6b7685;
  --accent: #22d3ee;
  --accent-2: #8b5cf6;
  --accent-3: #5eead4;
  --gold: #fbbf24;
  --grad: linear-gradient(120deg, #22d3ee 0%, #8b5cf6 100%);
  --grad-text: linear-gradient(120deg, #67e8f9 0%, #a78bfa 60%, #f0abfc 100%);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --r-sm: 12px;
  --r: 20px;
  --r-lg: 28px;
  --wrap: 1240px;
  --pad: clamp(1.25rem, 4vw, 3rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
[hidden] { display: none !important; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
ul { list-style: none; }
::selection { background: rgba(34, 211, 238, 0.3); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.mono { font-family: var(--font-mono); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Ambient background ---------- */
.aurora { position: fixed; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.aurora::before, .aurora::after {
  content: ''; position: absolute; width: 60vmax; height: 60vmax; border-radius: 50%; filter: blur(90px); opacity: 0.55;
}
.aurora::before { background: radial-gradient(circle, rgba(34, 211, 238, 0.28), transparent 65%); top: -25vmax; left: -15vmax; animation: drift 24s ease-in-out infinite alternate; }
.aurora::after { background: radial-gradient(circle, rgba(139, 92, 246, 0.3), transparent 65%); bottom: -30vmax; right: -20vmax; animation: drift 30s ease-in-out infinite alternate-reverse; }
@keyframes drift { to { transform: translate3d(8vmax, 6vmax, 0) scale(1.1); } }

.grid-bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 20%, transparent 75%);
}
.cursor-glow { position: fixed; top: 0; left: 0; width: 0; height: 0; z-index: -1; pointer-events: none; }
.cursor-glow::before {
  content: ''; position: absolute; width: 520px; height: 520px; margin: -260px 0 0 -260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.09), transparent 65%);
}
@media (hover: none) { .cursor-glow { display: none; } }

/* ---------- Layout primitives ---------- */
.container { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: var(--pad); }
.section { padding-block: clamp(4.5rem, 9vw, 8rem); position: relative; }
.section-head { margin-bottom: clamp(2rem, 5vw, 3.5rem); max-width: 680px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-mono); font-size: 0.75rem;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem;
}
.eyebrow::before { content: ''; width: 24px; height: 1px; background: currentColor; }
.h2 { font-family: var(--font-display); font-size: clamp(2rem, 4.6vw, 3.4rem); line-height: 1.08; letter-spacing: -0.03em; font-weight: 600; }
.lead { color: var(--text-2); font-size: clamp(1rem, 1.5vw, 1.15rem); margin-top: 1rem; max-width: 56ch; }
.grad-text { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }

.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem; padding: 0.85rem 1.5rem;
  border-radius: 999px; font-weight: 500; font-size: 0.92rem; border: 1px solid transparent; transition: transform 0.3s var(--ease), box-shadow 0.3s, background 0.3s, border-color 0.3s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: #fff; color: #05070a; box-shadow: 0 8px 30px -8px rgba(34, 211, 238, 0.5); }
.btn-primary:hover { box-shadow: 0 14px 40px -8px rgba(139, 92, 246, 0.6); }
.btn-ghost { background: var(--surface); border-color: var(--line-2); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.btn-ghost:hover { border-color: var(--accent); background: rgba(34, 211, 238, 0.08); }
.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.82rem; }

.chip {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.28rem 0.7rem; border-radius: 999px; font-size: 0.68rem;
  text-transform: uppercase; letter-spacing: 0.08em; background: rgba(5, 7, 10, 0.55); border: 1px solid var(--line-2);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); color: var(--text);
}
.chip-gold { color: var(--gold); border-color: rgba(251, 191, 36, 0.4); background: rgba(251, 191, 36, 0.12); }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag { font-family: var(--font-mono); font-size: 0.7rem; padding: 0.2rem 0.65rem; border-radius: 999px; background: rgba(255, 255, 255, 0.07); border: 1px solid var(--line); color: var(--text-2); }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }

/* Cursor spotlight on any .spot element */
.spot { position: relative; overflow: hidden; isolation: isolate; }
.spot::before {
  content: ''; position: absolute; inset: 0; z-index: 3; pointer-events: none; opacity: 0; transition: opacity 0.35s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(34, 211, 238, 0.13), transparent 60%);
}
.spot:hover::before { opacity: 1; }

/* Scroll reveal (only hidden when JS is running) */
.js [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); transition-delay: var(--d, 0ms); }
.js [data-reveal].in { opacity: 1; transform: none; }

/* ---------- Loader ---------- */
#loader { position: fixed; inset: 0; z-index: 1000; background: var(--bg); display: grid; place-items: center; transition: opacity 0.5s, visibility 0.5s; }
#loader.done { opacity: 0; visibility: hidden; }
.loader-mark { font-family: var(--font-display); font-weight: 700; font-size: 2.6rem; letter-spacing: -0.04em; }
.loader-bar { width: 160px; height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; margin-top: 1rem; }
.loader-bar i { display: block; height: 100%; width: 40%; background: var(--grad); animation: slide 1s ease-in-out infinite; }
@keyframes slide { from { transform: translateX(-100%); } to { transform: translateX(260%); } }
.loader-inner { text-align: center; }

/* ---------- Navigation ---------- */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; background: var(--grad); transform-origin: left; transform: scaleX(0); z-index: 200; }
.nav {
  position: fixed; top: 14px; left: 50%; transform: translateX(-50%); z-index: 150; width: min(960px, calc(100% - 1.5rem));
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.5rem 0.55rem 0.5rem 1.2rem;
  border-radius: 999px; border: 1px solid var(--line); background: rgba(9, 12, 17, 0.55);
  backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4); transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.nav.scrolled { background: rgba(9, 12, 17, 0.82); border-color: var(--line-2); box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.6); }
.nav-logo { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.03em; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 0.15rem; }
.nav-links a { padding: 0.5rem 0.9rem; border-radius: 999px; font-size: 0.85rem; color: var(--text-2); transition: color 0.2s, background 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); background: var(--surface-2); }
.nav-links .nav-cta { background: #fff; color: #05070a; font-weight: 500; margin-left: 0.4rem; }
.nav-links .nav-cta:hover { background: var(--accent-3); color: #05070a; }
.menu-toggle { display: none; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-2); background: var(--surface); font-size: 1rem; }

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: flex; align-items: center; padding-top: 7.5rem; padding-bottom: 4rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.status-pill {
  display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.4rem 0.95rem 0.4rem 0.8rem; border-radius: 999px;
  background: rgba(94, 234, 212, 0.08); border: 1px solid rgba(94, 234, 212, 0.25); color: var(--accent-3); font-size: 0.8rem; margin-bottom: 1.75rem;
}
.status-pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-3); box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.6); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 10px rgba(94, 234, 212, 0); } 100% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0); } }
.hero-name { font-family: var(--font-display); font-weight: 700; font-size: clamp(3.2rem, 9vw, 7rem); line-height: 0.95; letter-spacing: -0.045em; }
.hero-name .line { display: block; }
.role-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.75rem 0 1.25rem; }
.role-chips span { font-family: var(--font-mono); font-size: 0.78rem; padding: 0.35rem 0.85rem; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); background: var(--surface); }
.hero-copy { color: var(--text-2); max-width: 52ch; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 0; margin-top: 3rem; border-top: 1px solid var(--line); padding-top: 1.75rem; }
.stat { padding-right: clamp(1.25rem, 3.5vw, 2.75rem); margin-right: clamp(1.25rem, 3.5vw, 2.75rem); border-right: 1px solid var(--line); }
.stat:last-child { border: 0; margin: 0; padding: 0; }
.stat-num { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.9rem, 3.4vw, 2.6rem); line-height: 1; letter-spacing: -0.03em; }
.stat-label { font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-3); margin-top: 0.5rem; }

.portrait { position: relative; max-width: 420px; margin-inline: auto; }
.portrait-frame {
  position: relative; aspect-ratio: 4 / 5; border-radius: 36px; padding: 2px; background: linear-gradient(160deg, rgba(34, 211, 238, 0.7), rgba(139, 92, 246, 0.1) 40%, rgba(139, 92, 246, 0.7));
  box-shadow: 0 40px 100px -30px rgba(34, 211, 238, 0.35);
}
.portrait-frame img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%; border-radius: 34px; filter: grayscale(0.15) contrast(1.05); }
.portrait-frame::after { content: ''; position: absolute; inset: 2px; border-radius: 34px; background: linear-gradient(to top, rgba(5, 7, 10, 0.55), transparent 45%); pointer-events: none; }
.float-chip {
  position: absolute; z-index: 2; display: flex; align-items: center; gap: 0.7rem; padding: 0.7rem 1rem; border-radius: 16px; font-size: 0.8rem; line-height: 1.3;
  background: rgba(10, 13, 19, 0.82); border: 1px solid var(--line-2); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  animation: bob 6s ease-in-out infinite;
}
.float-chip i { color: var(--accent); font-size: 1.15rem; }
.float-chip small { display: block; color: var(--text-2); font-size: 0.72rem; }
.fc-1 { left: -8%; top: 14%; }
.fc-2 { right: -7%; top: 46%; animation-delay: -2s; }
.fc-3 { left: 6%; bottom: -4%; animation-delay: -4s; }
@keyframes bob { 50% { transform: translateY(-10px); } }

/* ---------- Tech marquee ---------- */
.marquee { border-block: 1px solid var(--line); overflow: hidden; padding: 1.1rem 0; background: rgba(255, 255, 255, 0.015);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; width: max-content; gap: 3rem; animation: marquee 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item { display: inline-flex; align-items: center; gap: 0.7rem; font-family: var(--font-display); font-size: 1.15rem; font-weight: 500; color: var(--text-2); white-space: nowrap; }
.marquee-item i { color: var(--accent); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Services (bento) ---------- */
.bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; }
.service { padding: 1.75rem; min-height: 250px; display: flex; flex-direction: column; transition: border-color 0.3s, transform 0.4s var(--ease); }
.service:hover { border-color: rgba(34, 211, 238, 0.35); transform: translateY(-4px); }
.service { grid-column: span 6; }
.service:nth-child(4n + 1), .service:nth-child(4n) { grid-column: span 7; }
.service:nth-child(4n + 2), .service:nth-child(4n + 3) { grid-column: span 5; }
.service:nth-child(4n + 1) { background: linear-gradient(135deg, rgba(34, 211, 238, 0.1), var(--surface) 60%); }
.service:nth-child(4n) { background: linear-gradient(225deg, rgba(139, 92, 246, 0.12), var(--surface) 60%); }
.service-icon { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; font-size: 1.3rem; color: var(--accent); background: rgba(34, 211, 238, 0.1); border: 1px solid rgba(34, 211, 238, 0.2); margin-bottom: auto; }
.service h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; margin: 2rem 0 0.5rem; }
.service p { color: var(--text-2); font-size: 0.95rem; }
.service .num { position: absolute; top: 1.5rem; right: 1.75rem; font-size: 0.75rem; color: var(--text-3); }

/* ---------- Skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; }
.skill-group { grid-column: span 6; padding: 1.75rem; display: flex; flex-direction: column; gap: 1.5rem; transition: border-color 0.3s, transform 0.4s var(--ease); }
.skill-group:hover { border-color: rgba(139, 92, 246, 0.4); transform: translateY(-4px); }
.skill-group:nth-child(1) { grid-column: span 12; }
.skill-group:nth-child(2) { grid-column: span 5; }
.skill-group:nth-child(3) { grid-column: span 7; }
.skill-group:nth-child(4) { grid-column: span 7; }
.skill-group:nth-child(5) { grid-column: span 5; }
.skill-group.is-primary {
  padding: clamp(1.75rem, 3vw, 2.5rem); border-color: rgba(34, 211, 238, 0.28);
  background: radial-gradient(900px 300px at 0% 0%, rgba(34, 211, 238, 0.14), transparent 60%), radial-gradient(700px 300px at 100% 100%, rgba(139, 92, 246, 0.16), transparent 60%), var(--surface);
}
.sg-head { display: flex; align-items: center; gap: 1rem; }
.sg-icon { width: 52px; height: 52px; flex-shrink: 0; display: grid; place-items: center; border-radius: 16px; font-size: 1.25rem; color: var(--accent); background: rgba(34, 211, 238, 0.1); border: 1px solid rgba(34, 211, 238, 0.22); }
.is-primary .sg-icon { width: 60px; height: 60px; font-size: 1.5rem; color: #05070a; background: var(--grad); border: 0; box-shadow: 0 10px 30px -8px rgba(34, 211, 238, 0.55); }
.sg-title h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; }
.is-primary .sg-title h3 { font-size: clamp(1.5rem, 2.6vw, 2rem); letter-spacing: -0.03em; }
.sg-title span { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-3); }
.is-primary .sg-title span { color: var(--accent); }
.sg-badge { margin-left: auto; }
.sg-chips { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.skill-chip {
  display: inline-flex; align-items: center; gap: 0.55rem; padding: 0.5rem 0.95rem; border-radius: 999px; font-size: 0.88rem; color: var(--text);
  background: rgba(255, 255, 255, 0.045); border: 1px solid var(--line); transition: transform 0.3s var(--ease), border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.skill-chip i { font-size: 0.85rem; color: var(--accent); transition: color 0.3s; }
.skill-chip:hover { transform: translateY(-2px); border-color: rgba(34, 211, 238, 0.5); background: rgba(34, 211, 238, 0.1); box-shadow: 0 8px 24px -10px rgba(34, 211, 238, 0.6); }
.is-primary .skill-chip { padding: 0.7rem 1.25rem; font-size: 1rem; background: rgba(255, 255, 255, 0.06); border-color: var(--line-2); }
.is-primary .skill-chip i { font-size: 1rem; }
.js .skill-group[data-reveal] .skill-chip { opacity: 0; transform: translateY(10px) scale(0.96); }
.js .skill-group.in .skill-chip { opacity: 1; transform: none; transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), border-color 0.3s, background 0.3s, box-shadow 0.3s; transition-delay: calc(var(--d, 0ms) + var(--k) * 45ms + 150ms), calc(var(--d, 0ms) + var(--k) * 45ms + 150ms), 0s, 0s, 0s; }
.js .skill-group.in .skill-chip:hover { transform: translateY(-2px); transition-delay: 0s; }

/* ---------- Experience ---------- */
.timeline { position: relative; display: grid; gap: 1.25rem; padding-left: 2.25rem; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 12px; bottom: 12px; width: 1px; background: linear-gradient(to bottom, var(--accent), var(--accent-2) 60%, transparent); }
.exp { position: relative; padding: 1.75rem; transition: border-color 0.3s; }
.exp:hover { border-color: var(--line-2); }
.exp::before { content: ''; position: absolute; left: calc(-2.25rem + 1px); top: 2.1rem; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.exp.current::before { background: var(--accent); box-shadow: 0 0 0 6px rgba(34, 211, 238, 0.18); }
.exp-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; align-items: flex-start; }
.exp-role { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; }
.exp-company { color: var(--accent); font-weight: 500; }
.exp-period { font-family: var(--font-mono); font-size: 0.75rem; padding: 0.3rem 0.8rem; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); white-space: nowrap; }
.exp.current .exp-period { color: var(--accent-3); border-color: rgba(94, 234, 212, 0.35); background: rgba(94, 234, 212, 0.08); }
.exp-meta { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; color: var(--text-3); font-size: 0.85rem; margin: 0.35rem 0 1rem; }
.exp-meta i { margin-right: 0.35rem; }
.exp-desc { font-family: var(--font-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 0.6rem; }
.exp-bullets li { position: relative; padding-left: 1.2rem; color: var(--text-2); font-size: 0.93rem; margin-bottom: 0.4rem; }
.exp-bullets li::before { content: ''; position: absolute; left: 0; top: 0.7em; width: 6px; height: 1px; background: var(--accent); }

/* ---------- Projects ---------- */
.projects-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1.5rem; margin-bottom: clamp(2rem, 4vw, 3rem); }
.projects-head .section-head { margin: 0; }
.seg { position: relative; display: inline-flex; padding: 4px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); max-width: 100%; overflow-x: auto; scrollbar-width: none; }
.seg::-webkit-scrollbar { display: none; }
.seg-thumb { position: absolute; top: 4px; bottom: 4px; left: 0; width: 0; border-radius: 999px; background: #fff; transition: transform 0.45s var(--ease), width 0.45s var(--ease); }
.seg button { position: relative; z-index: 1; background: none; border: 0; padding: 0.55rem 1.15rem; border-radius: 999px; font-size: 0.82rem; font-weight: 500; color: var(--text-2); transition: color 0.3s; white-space: nowrap; display: inline-flex; gap: 0.45rem; align-items: center; }
.seg button.active { color: #05070a; }
.seg button em { font-style: normal; font-family: var(--font-mono); font-size: 0.68rem; opacity: 0.55; }

.pgrid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.1rem; transition: opacity 0.25s, transform 0.25s; }
.pgrid.switching { opacity: 0; transform: translateY(10px); }

.pcard {
  grid-column: span var(--span, 4); position: relative; display: block; min-height: 540px; border-radius: var(--r-lg); background: #0b0f15; border: 1px solid var(--line);
  container: pcard / inline-size; transition: border-color 0.4s, box-shadow 0.5s var(--ease), transform 0.8s var(--ease), opacity 0.8s var(--ease);
}
.pcard:hover { border-color: rgba(34, 211, 238, 0.4); box-shadow: 0 30px 70px -30px rgba(34, 211, 238, 0.35); }
.pcard-bg { position: absolute; inset: -15%; z-index: -2; background-size: cover; background-position: center; filter: blur(60px) saturate(1.5); opacity: 0.5; transform: scale(1.1); transition: opacity 0.5s; }
.pcard:hover .pcard-bg { opacity: 0.75; }
.pcard-art { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; opacity: 0; transition: opacity 0.6s, transform 1s var(--ease); }
.pcard.is-ready .pcard-art { opacity: 1; }
.pcard:hover .pcard-art { transform: scale(1.04); }
.pcard-art.ph { display: grid; place-items: center; font-size: 4rem; color: var(--accent); opacity: 0.25; }
.pcard.is-portrait .pcard-art { display: none; }
.pcard-shade { position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(to top, rgba(5, 7, 10, 0.96) 0%, rgba(5, 7, 10, 0.78) 26%, rgba(5, 7, 10, 0.15) 58%, rgba(5, 7, 10, 0.25) 100%); }
.pcard-top { position: absolute; top: 1.15rem; left: 1.15rem; right: 1.15rem; z-index: 4; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.pcard-info { position: absolute; left: 0; right: 0; bottom: 0; z-index: 4; padding: 1.75rem; }
.pcard-title { font-family: var(--font-display); font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; }
.pcard-sub { color: var(--text-2); margin: 0.3rem 0 1rem; font-size: 0.95rem; }
.pcard-go {
  position: absolute; z-index: 5; right: 1.15rem; top: 1.15rem; width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.1); border: 1px solid var(--line-2); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); transition: all 0.4s var(--ease);
}
.pcard:hover .pcard-go { background: #fff; color: #05070a; transform: scale(1.1); }

/* Phone-frame stage (shown only for tall screenshots) */
.pcard-stage { display: none; position: absolute; z-index: 2; left: 0; right: 0; top: 3.8rem; height: 70%; pointer-events: none; transform: translate3d(calc(var(--px, 0) * -10px), calc(var(--py, 0) * -6px), 0); transition: transform 0.4s ease-out; }
.pcard.is-portrait .pcard-stage { display: block; }
.dev {
  position: absolute; left: 50%; top: 0; width: clamp(118px, 32cqw, 158px); aspect-ratio: 9 / 19.2; padding: 5px; border-radius: 28px; background: #0a0d12;
  border: 1px solid rgba(255, 255, 255, 0.18); box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.8), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  transform: translateX(-50%) rotate(-4deg); transition: transform 0.7s var(--ease);
}
.dev img { width: 100%; height: 100%; object-fit: cover; object-position: top; border-radius: 23px; }
.dev-b { top: 2.2rem; transform: translateX(8%) rotate(8deg); opacity: 0.85; z-index: -1; }
.dev-a:only-child { transform: translateX(-50%) rotate(-3deg); }
.pcard:hover .dev-a { transform: translateX(-50%) translateY(-12px) rotate(0deg); }
.pcard:hover .dev-b { transform: translateX(22%) translateY(-6px) rotate(11deg); }
.pcard:hover .dev-a:only-child { transform: translateX(-50%) translateY(-12px) rotate(0deg); }

@container pcard (min-width: 560px) {
  .pcard-shade { background: linear-gradient(to right, rgba(5, 7, 10, 0.95) 0%, rgba(5, 7, 10, 0.7) 40%, rgba(5, 7, 10, 0.05) 75%), linear-gradient(to top, rgba(5, 7, 10, 0.7), transparent 40%); }
  .pcard-info { max-width: 54%; padding: 2.25rem; padding-right: 1rem; }
  .pcard-stage { left: auto; right: 0; width: 52%; top: 2.5rem; height: auto; bottom: 0; }
  .dev { width: clamp(150px, 26cqw, 230px); }
}

/* ---------- Testimonials ---------- */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.testi { padding: 2rem; display: flex; flex-direction: column; transition: transform 0.4s var(--ease), border-color 0.3s; }
.testi:hover { transform: translateY(-4px); border-color: var(--line-2); }
.testi-stars { color: var(--gold); font-size: 0.8rem; letter-spacing: 0.15em; margin-bottom: 1.25rem; }
.testi p { color: var(--text); font-size: 1rem; line-height: 1.7; margin-bottom: 1.75rem; }
.testi-person { display: flex; align-items: center; gap: 0.9rem; margin-top: auto; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.testi-person img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; border: 1px solid var(--line-2); }
.testi-name { font-weight: 500; line-height: 1.3; }
.testi-role { color: var(--text-3); font-size: 0.8rem; }

/* ---------- Contact ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 5vw, 4rem); padding: clamp(1.75rem, 4vw, 3.5rem); border-radius: var(--r-lg); position: relative; overflow: hidden; }
.contact-wrap::before { content: ''; position: absolute; width: 500px; height: 500px; top: -250px; left: -150px; background: radial-gradient(circle, rgba(34, 211, 238, 0.14), transparent 65%); pointer-events: none; }
.contact-items { display: grid; gap: 0.75rem; margin: 2rem 0; }
.contact-item { display: flex; align-items: center; gap: 1rem; padding: 0.85rem 1rem; border-radius: var(--r-sm); background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line); transition: all 0.3s; }
.contact-item:hover { border-color: rgba(34, 211, 238, 0.4); transform: translateX(4px); }
.contact-item i { width: 40px; height: 40px; flex-shrink: 0; display: grid; place-items: center; border-radius: 12px; color: var(--accent); background: rgba(34, 211, 238, 0.1); }
.contact-item small { display: block; font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-3); }
.contact-item span { word-break: break-word; }
.socials { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.social { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line-2); background: var(--surface); transition: all 0.3s var(--ease); }
.social:hover { background: #fff; color: #05070a; transform: translateY(-3px); }
.form { display: grid; gap: 1rem; align-content: start; position: relative; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label { display: block; font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-3); margin-bottom: 0.45rem; }
.field input, .field textarea {
  width: 100%; padding: 0.9rem 1rem; border-radius: var(--r-sm); background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); color: var(--text);
  font: inherit; font-size: 0.95rem; transition: border-color 0.2s, background 0.2s; resize: vertical;
}
.field textarea { min-height: 140px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); background: rgba(34, 211, 238, 0.05); }
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.form-status { font-size: 0.88rem; min-height: 1.4em; color: var(--text-2); }
.form-status.ok { color: var(--accent-3); }
.form-status.err { color: #fca5a5; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: 2rem; color: var(--text-3); font-size: 0.85rem; }
.footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; }
.footer b { color: var(--text-2); font-weight: 500; }
.whatsapp { position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 120; width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; background: #25d366; color: #fff; font-size: 1.5rem; box-shadow: 0 10px 30px -5px rgba(37, 211, 102, 0.5); transition: transform 0.3s var(--ease); }
.whatsapp:hover { transform: scale(1.1) rotate(-6deg); }

/* ==========================================================================
   Project details page
   ========================================================================== */
.pd-hero { position: relative; padding-top: 8.5rem; padding-bottom: clamp(3rem, 6vw, 5rem); overflow: hidden; }
.pd-hero-bg { position: absolute; inset: -10%; z-index: -1; background-size: cover; background-position: center; filter: blur(90px) saturate(1.6); opacity: 0.35; }
.pd-hero::after { content: ''; position: absolute; inset: 0; z-index: -1; background: linear-gradient(to bottom, transparent 40%, var(--bg)); }
.back { display: inline-flex; align-items: center; gap: 0.6rem; font-size: 0.85rem; color: var(--text-2); padding: 0.45rem 1rem 0.45rem 0.8rem; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); margin-bottom: 2.5rem; transition: all 0.3s; }
.back:hover { color: var(--text); border-color: var(--accent); }
.back i { transition: transform 0.3s var(--ease); }
.back:hover i { transform: translateX(-3px); }
.pd-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.pd-title { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.6rem, 7vw, 5.2rem); line-height: 0.98; letter-spacing: -0.045em; margin: 1.1rem 0; }
.pd-tagline { color: var(--text-2); font-size: clamp(1.05rem, 1.8vw, 1.3rem); max-width: 48ch; }
.pd-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; align-items: center; }
.status { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.3rem 0.8rem; border-radius: 999px; font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-3); border: 1px solid rgba(94, 234, 212, 0.3); background: rgba(94, 234, 212, 0.08); }
.status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.store { display: inline-flex; align-items: center; gap: 0.75rem; padding: 0.55rem 1.2rem 0.55rem 1rem; border-radius: 14px; background: #000; border: 1px solid var(--line-2); transition: all 0.3s var(--ease); }
.store:hover { transform: translateY(-3px); border-color: var(--accent); }
.store i { font-size: 1.7rem; }
.store small { display: block; font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-2); line-height: 1.2; }
.store b { font-size: 1.02rem; font-weight: 600; line-height: 1.2; }

/* hero device cluster */
.pd-visual { position: relative; height: clamp(380px, 52vw, 560px); }
.pd-visual .dev { width: clamp(150px, 19vw, 230px); box-shadow: 0 50px 90px -20px rgba(0, 0, 0, 0.85); }
.pd-visual .dev:nth-child(1) { left: 50%; top: 0; z-index: 3; transform: translateX(-50%) rotate(0deg); animation: bob 7s ease-in-out infinite; }
.pd-visual .dev:nth-child(2) { left: 50%; top: 9%; z-index: 2; transform: translateX(-115%) rotate(-9deg); opacity: 0.9; }
.pd-visual .dev:nth-child(3) { left: 50%; top: 9%; z-index: 2; transform: translateX(15%) rotate(9deg); opacity: 0.9; }
.pd-art { width: 100%; max-height: 520px; object-fit: cover; border-radius: var(--r-lg); border: 1px solid var(--line-2); box-shadow: 0 50px 90px -30px rgba(0, 0, 0, 0.8); }

.meta-strip { display: flex; flex-wrap: wrap; width: fit-content; max-width: 100%; margin-top: -1.5rem; position: relative; z-index: 2; overflow: hidden; }
.meta-cell { padding: 1.4rem 2rem 1.4rem 1.6rem; min-width: 160px; border-right: 1px solid var(--line); }
.meta-cell:last-child { border-right: 0; }
.meta-cell small { display: block; font-family: var(--font-mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-3); margin-bottom: 0.35rem; }
.meta-cell b { font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; text-transform: capitalize; }

/* gallery */
.gallery { padding-block: clamp(3.5rem, 7vw, 6rem) 1rem; }
.gallery-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; margin-bottom: 2rem; }
.arrows { display: flex; gap: 0.5rem; }
.arrow-btn { width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line-2); background: var(--surface); display: grid; place-items: center; transition: all 0.3s var(--ease); }
.arrow-btn:hover:not(:disabled) { background: #fff; color: #05070a; transform: scale(1.06); }
.arrow-btn:disabled { opacity: 0.3; cursor: default; }
.rail { display: flex; gap: 1.25rem; overflow-x: auto; scroll-snap-type: x proximity; padding: 0.5rem var(--pad) 1.5rem; scroll-padding-inline: var(--pad); scrollbar-width: none; cursor: grab; -webkit-overflow-scrolling: touch; }
.rail::-webkit-scrollbar { display: none; }
.rail.dragging { cursor: grabbing; scroll-snap-type: none; }
.rail.dragging .shot { pointer-events: none; }
.shot { flex: 0 0 auto; height: clamp(420px, 62vh, 600px); scroll-snap-align: center; border-radius: var(--r); overflow: hidden; border: 1px solid var(--line-2); background: #0a0d12; cursor: zoom-in; transition: transform 0.5s var(--ease), border-color 0.3s, box-shadow 0.4s; padding: 0; }
.shot:hover { transform: translateY(-8px); border-color: rgba(34, 211, 238, 0.5); box-shadow: 0 30px 60px -20px rgba(34, 211, 238, 0.3); }
.shot.is-portrait { border-radius: 34px; padding: 6px; border-color: rgba(255, 255, 255, 0.2); }
.shot.is-portrait img { border-radius: 28px; }
.shot img { height: 100%; width: auto; max-width: none; object-fit: contain; user-select: none; -webkit-user-drag: none; }
.rail-progress { height: 2px; background: var(--line); margin: 0 var(--pad); border-radius: 2px; overflow: hidden; max-width: var(--wrap); }
.rail-progress i { display: block; height: 100%; width: 100%; background: var(--grad); transform-origin: left; transform: scaleX(0.1); transition: transform 0.15s linear; }
@media (min-width: 1300px) { .rail-progress { margin-inline: auto; } }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 500; display: grid; place-items: center; background: rgba(3, 5, 8, 0.92); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; }
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img { max-width: min(92vw, 900px); max-height: 86vh; border-radius: 18px; box-shadow: 0 40px 100px rgba(0, 0, 0, 0.7); animation: zoomIn 0.4s var(--ease); }
@keyframes zoomIn { from { opacity: 0; transform: scale(0.94); } }
.lb-btn { position: absolute; width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center; background: var(--surface-2); border: 1px solid var(--line-2); transition: background 0.2s; }
.lb-btn:hover { background: rgba(255, 255, 255, 0.18); }
.lb-close { top: 1.25rem; right: 1.25rem; }
.lb-prev { left: 1.25rem; top: 50%; margin-top: -25px; }
.lb-next { right: 1.25rem; top: 50%; margin-top: -25px; }
.lb-count { position: absolute; bottom: 1.25rem; left: 50%; transform: translateX(-50%); font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-2); }

/* details content */
.pd-body { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; padding-block: clamp(3rem, 6vw, 5rem); }
.pd-main { display: grid; gap: clamp(3rem, 6vw, 4.5rem); }
.pd-h { font-family: var(--font-display); font-size: clamp(1.5rem, 2.8vw, 2rem); font-weight: 600; letter-spacing: -0.03em; margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.9rem; }
.pd-h::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.pd-text { color: var(--text-2); font-size: 1.05rem; line-height: 1.8; }
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.duo > div { padding: 1.5rem; }
.duo h4, .cs h4 { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); margin-bottom: 0.6rem; font-weight: 500; }
.duo p { color: var(--text-2); font-size: 0.95rem; }
.features { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1rem; }
.feature { padding: 1.5rem; transition: transform 0.4s var(--ease), border-color 0.3s; }
.feature:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.35); }
.feature i { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; background: rgba(34, 211, 238, 0.1); color: var(--accent); margin-bottom: 1rem; }
.feature h3 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; margin-bottom: 0.35rem; }
.feature p { color: var(--text-2); font-size: 0.9rem; }
.cs { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.cs > div { padding: 1.75rem; }
.cs .sol { background: linear-gradient(160deg, rgba(94, 234, 212, 0.09), var(--surface)); border-color: rgba(94, 234, 212, 0.25); }
.cs .sol h4 { color: var(--accent-3); }
.cs p { color: var(--text-2); }
.aside { position: sticky; top: 100px; display: grid; gap: 1rem; }
.aside > div { padding: 1.5rem; }
.aside h4 { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-3); font-weight: 500; margin-bottom: 0.9rem; }
.aside-links { display: grid; gap: 0.5rem; }
.aside-cta { background: linear-gradient(160deg, rgba(139, 92, 246, 0.18), rgba(34, 211, 238, 0.08)); border-color: rgba(139, 92, 246, 0.3); }
.aside-cta p { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 1.1rem; }

.next { display: block; padding: clamp(2rem, 5vw, 3.5rem); border-radius: var(--r-lg); position: relative; }
.next small { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-3); }
.next h3 { font-family: var(--font-display); font-size: clamp(2rem, 6vw, 4.5rem); letter-spacing: -0.04em; line-height: 1; margin-top: 0.75rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.next h3 i { font-size: 0.5em; width: 1.6em; height: 1.6em; display: grid; place-items: center; border: 1px solid var(--line-2); border-radius: 50%; transition: all 0.4s var(--ease); flex-shrink: 0; }
.next:hover h3 i { background: #fff; color: #05070a; transform: translateX(6px); }
.next p { color: var(--text-2); margin-top: 0.6rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.related-grid .pcard { grid-column: auto; min-height: 500px; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1000px) {
  .hero-grid, .pd-grid { grid-template-columns: 1fr; }
  .portrait { max-width: 340px; }
  .fc-1 { left: -4%; } .fc-2 { right: -4%; }
  .service, .service:nth-child(n) { grid-column: span 6; }
  .skill-group:nth-child(n) { grid-column: span 6; }
  .skill-group:nth-child(1) { grid-column: 1 / -1; }
  .pcard { grid-column: span 6; }
  .testi-grid, .related-grid { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .pd-body { grid-template-columns: 1fr; }
  .aside { position: static; grid-template-columns: 1fr 1fr; }
  .pd-visual { height: 460px; }
}
@media (max-width: 760px) {
  .menu-toggle { display: grid; place-items: center; }
  .nav-links {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0.25rem; padding: 0.75rem; border-radius: 24px;
    background: rgb(9, 12, 17); border: 1px solid var(--line-2); box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.8);
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity 0.25s, visibility 0.25s, transform 0.3s var(--ease);
  }
  .nav.open .nav-links { opacity: 1; visibility: visible; transform: none; }
  .nav-links a { font-size: 1.05rem; padding: 0.8rem 1.1rem; border-radius: 14px; display: block; }
  .nav-links .nav-cta { margin: 0.4rem 0 0; text-align: center; }
  .nav .nav-logo, .nav .menu-toggle { position: relative; z-index: 2; }
  .hero { padding-top: 6.5rem; }
  .form-row, .duo, .cs { grid-template-columns: 1fr; }
  .service, .service:nth-child(n) { grid-column: 1 / -1; min-height: 0; }
  .skill-group:nth-child(n) { grid-column: 1 / -1; }
  .sg-badge { display: none; }
  .pcard { grid-column: 1 / -1; min-height: 520px; }
  .projects-head { align-items: flex-start; }
  .seg { width: 100%; }
  .float-chip { display: none; }
  .hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .stat, .stat:last-child { padding: 0; margin: 0; border: 0; }
  .stat-label { letter-spacing: 0.04em; font-size: 0.62rem; }
  .aside { grid-template-columns: 1fr; }
  .meta-cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .meta-cell:last-child { border-bottom: 0; }
  .meta-strip { width: 100%; }
  .meta-cell { flex: 1 1 45%; min-width: 0; }
  .meta-cell { border-right: 1px solid var(--line); }
  .pd-visual { height: 420px; }
  .pd-visual .dev { width: 150px; }
  .lb-prev { left: 0.5rem; } .lb-next { right: 0.5rem; }
  .gallery-head .arrows { display: none; }
  .footer .container { flex-direction: column; text-align: center; }
}

@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 [data-reveal] { opacity: 1; transform: none; }
}