/* ================= Theme tokens ================= */
:root {
  --accent-1: #8B5CF6;
  --accent-2: #22D3EE;
  --accent-3: #F472B6;
  --grad: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 100%);
  --radius: 18px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}
[data-theme="dark"] {
  --bg: #07080F;
  --bg-alt: #0C0E1A;
  --surface: rgba(255, 255, 255, .04);
  --surface-strong: rgba(255, 255, 255, .07);
  --border: rgba(255, 255, 255, .09);
  --text: #E8EAF2;
  --muted: #9AA0B8;
  --heading: #FFFFFF;
  --glow: rgba(139, 92, 246, .35);
  --nav-bg: rgba(7, 8, 15, .65);
  --grid-line: rgba(255, 255, 255, .035);
}
[data-theme="light"] {
  --bg: #F7F7FB;
  --bg-alt: #EEEFF6;
  --surface: rgba(255, 255, 255, .75);
  --surface-strong: #FFFFFF;
  --border: rgba(15, 18, 40, .09);
  --text: #2A2E45;
  --muted: #5D6380;
  --heading: #0D1024;
  --glow: rgba(139, 92, 246, .22);
  --nav-bg: rgba(247, 247, 251, .75);
  --grid-line: rgba(15, 18, 40, .045);
  --accent-1: #7C3AED;
  --accent-2: #0E7490;
}

/* ================= Base ================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; overflow-x: clip; }
body {
  margin: 0; font-family: 'Inter', system-ui, sans-serif; font-size: 16px; line-height: 1.7;
  background: var(--bg); color: var(--text);
  transition: background-color .4s var(--ease), color .4s var(--ease);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; color: var(--heading); line-height: 1.15; margin: 0 0 .5em; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, 92%); margin-inline: auto; }
section { padding: 110px 0; position: relative; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mono { font-family: 'JetBrains Mono', monospace; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem; font-family: 'JetBrains Mono', monospace;
  font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-2);
  margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--grad); }
.section-title { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
.section-lead { color: var(--muted); max-width: 620px; margin: 0 0 3rem; }

/* Background ambience */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; z-index: -1; pointer-events: none; }
[data-theme="light"] .blob { opacity: .28; }

/* ================= Progress + Nav ================= */
#progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--grad); z-index: 1001; box-shadow: 0 0 12px var(--accent-1); }
nav.topbar {
  position: fixed; top: 14px; left: 50%; transform: translateX(-50%); z-index: 1000;
  width: min(1180px, 94%); display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px 10px 22px; border-radius: 999px;
  background: var(--nav-bg); backdrop-filter: blur(16px) saturate(160%); -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border); transition: box-shadow .3s;
}
nav.topbar.scrolled { box-shadow: 0 10px 40px -10px rgba(0,0,0,.45); }
.logo { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.2rem; color: var(--heading); display: flex; align-items: center; gap: .55rem; }
.logo-mark { width: 34px; height: 34px; border-radius: 10px; background: var(--grad); display: grid; place-items: center; color: #fff; font-size: .95rem; }
.nav-links { display: flex; gap: .25rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { padding: .45rem .9rem; border-radius: 999px; font-size: .92rem; color: var(--muted); transition: color .2s, background .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--heading); background: var(--surface-strong); }
.nav-actions { display: flex; align-items: center; gap: .5rem; }
.icon-btn {
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  color: var(--heading); display: grid; place-items: center; cursor: pointer; font-size: 1.05rem;
  transition: transform .3s var(--ease), border-color .3s;
}
.icon-btn:hover { transform: rotate(-15deg) scale(1.06); border-color: var(--accent-1); }
[data-theme="dark"] .i-sun, [data-theme="light"] .i-moon { display: none; }
.menu-btn { display: none; }

/* ================= Buttons ================= */
.btn {
  display: inline-flex; align-items: center; gap: .55rem; padding: .85rem 1.6rem; border-radius: 999px;
  font-weight: 600; font-size: .95rem; border: 1px solid transparent; cursor: pointer;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 30px -8px var(--glow); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -8px var(--glow); }
.btn-ghost { border-color: var(--border); background: var(--surface); color: var(--heading); }
.btn-ghost:hover { border-color: var(--accent-2); transform: translateY(-3px); }

/* ================= Hero ================= */
#home { min-height: 100vh; display: flex; align-items: center; padding-top: 140px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 4rem; align-items: center; }
.status-pill {
  display: inline-flex; align-items: center; gap: .6rem; padding: .4rem 1rem .4rem .6rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); font-size: .85rem; color: var(--muted); margin-bottom: 1.6rem;
}
.pulse { width: 9px; height: 9px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 0 rgba(34,197,94,.6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(34,197,94,0); } 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); } }
.hero-title { font-size: clamp(2.6rem, 6.2vw, 5rem); font-weight: 700; letter-spacing: -.02em; margin-bottom: 1.2rem; }
.typed-line { font-family: 'JetBrains Mono', monospace; font-size: clamp(1rem, 1.8vw, 1.25rem); color: var(--muted); margin-bottom: 1.6rem; min-height: 1.8em; }
.typed-line .prompt { color: var(--accent-2); }
.caret { display: inline-block; width: 10px; height: 1.15em; background: var(--accent-1); vertical-align: text-bottom; margin-left: 3px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-desc { color: var(--muted); font-size: 1.08rem; max-width: 560px; margin-bottom: 2.2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.socials { display: flex; gap: .7rem; }
.socials a { width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); display: grid; place-items: center; color: var(--muted); font-size: 1.1rem; transition: all .3s var(--ease); }
.socials a:hover { color: #fff; background: var(--grad); border-color: transparent; transform: translateY(-4px); }

.portrait-wrap { position: relative; justify-self: center; width: min(400px, 100%); aspect-ratio: 4/5; }
.portrait-ring {
  position: absolute; inset: -3px; border-radius: 32px; background: conic-gradient(from var(--angle, 0deg), var(--accent-1), var(--accent-2), var(--accent-3), var(--accent-1));
  animation: spin 6s linear infinite; filter: blur(.5px);
}
.portrait-ring.glow { filter: blur(30px); opacity: .55; }
@property --angle { syntax: '<angle>'; initial-value: 0deg; inherits: false; }
@keyframes spin { to { --angle: 360deg; } }
.portrait { position: relative; width: 100%; height: 100%; border-radius: 30px; overflow: hidden; background: #0b0b0b; }
.portrait img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 25%; }
.float-card {
  position: absolute; display: flex; align-items: center; gap: .7rem; padding: .75rem 1rem; border-radius: 14px;
  background: var(--nav-bg); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--border);
  font-size: .85rem; color: var(--heading); box-shadow: 0 20px 40px -15px rgba(0,0,0,.5); animation: float 5s ease-in-out infinite;
}
.float-card i { font-size: 1.3rem; }
.float-card small { display: block; color: var(--muted); font-size: .72rem; }
.fc-1 { left: -38px; top: 6%; }
.fc-2 { right: -30px; bottom: 16%; animation-delay: -2.5s; }
@keyframes float { 50% { transform: translateY(-12px); } }
.scroll-hint { display: grid; place-items: center; width: 44px; height: 44px; position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); color: var(--muted); font-size: 1.4rem; animation: float 2.4s ease-in-out infinite; }

/* ================= Stats ================= */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; margin-top: -40px; }
.stat { padding: 1.8rem; text-align: center; }
.stat .num { font-family: 'Space Grotesk', sans-serif; font-size: 2.8rem; font-weight: 700; line-height: 1; }
.stat .label { color: var(--muted); font-size: .9rem; margin-top: .4rem; }

/* ================= Cards ================= */
.card {
  position: relative; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: transform .4s var(--ease), border-color .4s, box-shadow .4s var(--ease);
}
.card.hover:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--accent-1) 55%, transparent); box-shadow: 0 25px 50px -20px var(--glow); }
/* spotlight that follows the cursor */
.card.spot::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent-1) 14%, transparent), transparent 45%);
}
.card.spot:hover::after { opacity: 1; }

/* ================= About ================= */
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 4rem; align-items: center; }
.about-photo { position: relative; border-radius: 24px; overflow: hidden; aspect-ratio: 5/6; }
.about-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 40%; transition: transform .8s var(--ease); }
.about-photo:hover img { transform: scale(1.05); }
.about-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(7,8,15,.75), transparent 50%); }
.exp-badge { position: absolute; left: 20px; bottom: 20px; z-index: 2; color: #fff; }
.exp-badge b { font-family: 'Space Grotesk'; font-size: 3rem; line-height: 1; display: block; }
.info-list { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem 2rem; margin: 2rem 0; padding: 0; list-style: none; }
.info-list li { display: flex; gap: .7rem; align-items: baseline; font-size: .95rem; }
.info-list i { color: var(--accent-2); }
.info-list span { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { padding: .35rem .85rem; border-radius: 999px; font-size: .82rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); }

/* ================= Expertise ================= */
.exp-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; }
.skill { margin-bottom: 1.4rem; }
.skill-head { display: flex; justify-content: space-between; font-size: .92rem; margin-bottom: .5rem; font-weight: 500; }
.skill-head span:last-child { color: var(--muted); font-family: 'JetBrains Mono'; }
.bar { height: 8px; border-radius: 99px; background: var(--surface-strong); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--grad); transition: width 1.6s var(--ease); box-shadow: 0 0 12px var(--accent-1); }
.tabs { display: inline-flex; padding: 5px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); margin-bottom: 2rem; }
.tab { padding: .55rem 1.3rem; border-radius: 999px; border: 0; background: transparent; color: var(--muted); font: 600 .9rem 'Inter'; cursor: pointer; transition: all .3s; }
.tab.active { background: var(--grad); color: #fff; }
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--accent-1), var(--accent-2), transparent); }
.t-item { position: relative; padding: 1.3rem 1.5rem; margin-bottom: 1rem; }
.t-item::before { content: ""; position: absolute; left: calc(-2rem + 1px); top: 1.7rem; width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent-2); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-2) 20%, transparent); }
.t-item .when { font-family: 'JetBrains Mono'; font-size: .78rem; color: var(--accent-2); }
.t-item h3 { font-size: 1.1rem; margin: .3rem 0 .15rem; }
.t-item .org { color: var(--muted); font-size: .9rem; }
.t-item .org a { color: inherit; text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent-2) 45%, transparent); text-underline-offset: 3px; }
.t-item .org a:hover, .proj-block .proj-name a:hover { color: var(--accent-2); }
.proj-block .proj-name a { color: inherit; } .proj-block .proj-name a i { font-size: .7em; opacity: .6; margin-left: .2rem; }
.t-item.now .when::after { content: "CURRENT"; margin-left: .6rem; padding: .1rem .5rem; border-radius: 6px; font-size: .65rem; background: color-mix(in srgb, #22C55E 18%, transparent); color: #22C55E; }
.pane { display: none; } .pane.show { display: block; animation: fadeUp .5s var(--ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } }

/* ================= Services ================= */
#services { background: var(--bg-alt); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.3rem; }
.service { padding: 2rem 1.6rem; overflow: hidden; }
.service .ico { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; font-size: 1.5rem; color: #fff; background: var(--grad); margin-bottom: 1.4rem; box-shadow: 0 10px 25px -8px var(--glow); }
.service h3 { font-size: 1.2rem; }
.service p { color: var(--muted); font-size: .93rem; margin: 0; }
.service .idx { position: absolute; right: 18px; top: 12px; font: 700 3.5rem 'Space Grotesk'; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; opacity: .35; transition: opacity .3s; }
.service:hover .idx { opacity: .7; }

/* ================= Projects ================= */
.proj-head { display: flex; justify-content: space-between; align-items: end; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.proj-head .section-lead { margin: 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.project { overflow: hidden; display: flex; flex-direction: column; transition: transform .4s var(--ease), opacity .4s, border-color .4s, box-shadow .4s; }
.project.hide { display: none; }
.project .thumb { aspect-ratio: 16/10; overflow: hidden; position: relative; background: var(--bg-alt); }
.project .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .8s var(--ease); }
.project:hover .thumb img { transform: scale(1.08); }
.project .thumb .tag { position: absolute; top: 12px; left: 12px; padding: .25rem .7rem; border-radius: 999px; font-size: .72rem; font-weight: 600; background: rgba(7,8,15,.7); color: #fff; backdrop-filter: blur(6px); }
.project .body { padding: 1.4rem 1.5rem 1.6rem; display: flex; flex-direction: column; flex: 1; }
.project h3 { font-size: 1.15rem; }
.project p { color: var(--muted); font-size: .92rem; flex: 1; }
.project .more { color: var(--accent-2); font-weight: 600; font-size: .9rem; display: inline-flex; gap: .4rem; align-items: center; }
.project .more i { transition: transform .3s; }
.project:hover .more i { transform: translateX(5px); }

/* ================= Credentials ================= */
#credentials { background: var(--bg-alt); }
.cred { padding: 1.5rem; display: flex; gap: 1.1rem; align-items: flex-start; }
.cred .logo-box { flex: 0 0 64px; height: 64px; border-radius: 14px; background: #fff; display: grid; place-items: center; padding: 8px; }
.cred .logo-box img { width: 100%; height: 100%; object-fit: contain; }
.cred h3 { font-size: 1rem; margin: 0 0 .2rem; }
.cred small { color: var(--muted); font-size: .82rem; }
.cred .verify { margin-left: auto; color: var(--muted); font-size: 1.1rem; transition: color .2s; }
.cred:hover .verify { color: var(--accent-2); }
.award .logo-box { background: var(--grad); color: #fff; font-size: 1.6rem; }

/* ================= Testimonials ================= */
.t-slider { position: relative; max-width: 860px; margin: 0 auto; }
.t-track { display: grid; }
.quote { grid-area: 1/1; padding: 3rem; text-align: center; opacity: 0; transform: translateY(16px) scale(.98); transition: all .7s var(--ease); pointer-events: none; }
.quote.active { opacity: 1; transform: none; pointer-events: auto; }
.quote .qi { font-size: 2.6rem; line-height: 1; }
.quote p { font-size: 1.12rem; color: var(--text); margin: 1rem 0 1.8rem; }
.quote .who { display: inline-flex; gap: 1rem; align-items: center; text-align: left; }
.quote .who img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent-1); }
.quote .who b { color: var(--heading); display: block; }
.quote .who small { color: var(--muted); }
.dots { display: flex; justify-content: center; gap: .5rem; margin-top: 1.5rem; }
.dots { gap: .3rem; }
.dots button { width: 10px; height: 10px; border-radius: 99px; border: 0; background: var(--border); cursor: pointer; transition: all .4s var(--ease); padding: 0; position: relative; margin: 0 .2rem; }
.dots button::after { content: ""; position: absolute; inset: -11px -6px; }
.dots button.active { width: 32px; background: var(--grad); }

/* ================= Contact ================= */
.contact-wrap { padding: 3rem; display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; overflow: hidden; }
.contact-item { display: flex; gap: 1rem; align-items: center; margin-bottom: 1.4rem; }
.contact-item .ico { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: var(--surface-strong); border: 1px solid var(--border); color: var(--accent-2); font-size: 1.2rem; }
.contact-item small { display: block; color: var(--muted); font-size: .8rem; }
.contact-item a, .contact-item span { color: var(--heading); font-weight: 500; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { position: relative; margin-bottom: 1rem; }
.field input, .field textarea {
  width: 100%; padding: 1.3rem 1rem .5rem; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-strong);
  color: var(--heading); font: inherit; outline: none; transition: border-color .3s, box-shadow .3s; resize: vertical;
}
.field label { position: absolute; left: 1rem; top: .95rem; color: var(--muted); font-size: .95rem; pointer-events: none; transition: all .2s; }
.field input:focus, .field textarea:focus { border-color: var(--accent-1); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-1) 18%, transparent); }
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label { top: .35rem; font-size: .72rem; color: var(--accent-2); }
.form-status { margin-top: 1rem; font-size: .92rem; min-height: 1.4em; }
.form-status.ok { color: #22C55E; } .form-status.err { color: #F87171; }

/* ================= Footer ================= */
footer { border-top: 1px solid var(--border); padding: 2.5rem 0; }
.foot { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.foot p { margin: 0; color: var(--muted); font-size: .9rem; }
.credit { font-size: .72rem; opacity: .6; margin-top: .3rem !important; }
.credit a { text-decoration: underline; text-underline-offset: 2px; }
.to-top { position: fixed; right: 24px; bottom: 24px; z-index: 900; opacity: 0; pointer-events: none; transform: translateY(15px); transition: all .4s var(--ease); background: var(--grad); color: #fff; border: 0; }
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }

/* ================= Reveal ================= */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: .1s; } .d2 { transition-delay: .2s; } .d3 { transition-delay: .3s; }

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

/* ================= Responsive ================= */
@media (max-width: 1040px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav-links { position: absolute; top: calc(100% + 10px); left: 0; right: 0; flex-direction: column; padding: 1rem; border-radius: 20px; background: var(--nav-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid var(--border); display: none; }
  .nav-links.open { display: flex; }
  .menu-btn { display: grid; }
  .hero-grid, .about-grid, .exp-grid, .contact-wrap { grid-template-columns: 1fr; }
  .portrait-wrap { order: -1; width: min(300px, 80%); }
  .fc-1 { left: -10px; top: auto; bottom: 22%; } .fc-2 { right: -10px; bottom: 4%; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: 0; }
  section { padding: 80px 0; }
  .contact-wrap { padding: 2rem 1.4rem; }
}
@media (max-width: 600px) {
  .grid-4, .grid-3, .form-row, .info-list { grid-template-columns: 1fr; }
  .stats { gap: .8rem; }
  .stat { padding: 1.3rem .8rem; }
  .stat .num { font-size: 2.2rem; }
  .stat .label { font-size: .82rem; }
  .quote { padding: 2rem 1.2rem; }
}

/* ================= Utilities & accessibility ================= */
.muted { color: var(--muted); }
.mb-2 { margin-bottom: 2rem; }
.center { text-align: center; }
.pt-sm { padding-top: 40px; }
.pt-0 { padding-top: 0; }
section.alt { background: var(--bg-alt); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 2000; padding: .6rem 1rem; border-radius: 10px; background: var(--grad); color: #fff; font-weight: 600; transition: top .2s; }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 8px; }
::selection { background: color-mix(in srgb, var(--accent-1) 45%, transparent); color: #fff; }
a.inline, .info-list a, .t-body a { color: var(--accent-2); }
.blob-1 { width: 520px; height: 520px; background: var(--accent-1); top: -120px; left: -160px; }
.blob-2 { width: 420px; height: 420px; background: var(--accent-2); bottom: -80px; right: -120px; }
.blob-3 { width: 380px; height: 380px; background: var(--accent-3); top: 20%; left: 5%; opacity: .25 !important; }
.blob-4 { width: 300px; height: 300px; background: var(--accent-1); top: -100px; left: -100px; opacity: .3 !important; }
.chip-sm { font-size: .74rem; padding: .22rem .6rem; }

/* ================= Expandable timeline ================= */
details.t-item { padding: 0; }
details.t-item summary { list-style: none; cursor: pointer; padding: 1.3rem 3.2rem 1.3rem 1.5rem; position: relative; }
details.t-item summary::-webkit-details-marker { display: none; }
details.t-item .expand { position: absolute; right: 1.2rem; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--surface-strong); color: var(--muted); transition: transform .35s var(--ease), color .2s; }
details.t-item[open] .expand { transform: translateY(-50%) rotate(180deg); color: var(--accent-2); }
details.t-item:hover .expand { color: var(--heading); }
.t-body { padding: 0 1.5rem 1.4rem; font-size: .92rem; color: var(--muted); border-top: 1px solid var(--border); margin-top: -.2rem; padding-top: 1.1rem; animation: fadeUp .4s var(--ease); }
.t-body .role-title { font-size: .98rem; color: var(--heading); margin: 1.2rem 0 .6rem; }
.t-body .role-title:first-child { margin-top: 0; }
.t-body .proj-name, .t-body .kc { font-family: 'Space Grotesk', sans-serif; color: var(--heading); font-size: .92rem; margin: 0 0 .25rem; }
.t-body .proj-block { margin-bottom: .9rem; }
.t-body .proj-block p { margin: 0; }
.t-body .kc { margin-top: 1rem; color: var(--accent-2); font-family: 'JetBrains Mono', monospace; font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; }
.kc-list { margin: .4rem 0 1rem; padding-left: 1.1rem; }
.kc-list li { margin-bottom: .35rem; }
.kc-list li::marker { color: var(--accent-1); }
.role-history { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: .3rem; }
.role-history li { padding-left: 1rem; position: relative; color: var(--text); }
.role-history li::before { content: ""; position: absolute; left: 0; top: .65em; width: 6px; height: 6px; border-radius: 50%; background: var(--grad); }
.tools { display: flex; flex-wrap: wrap; gap: .35rem; }
.skills-col { align-self: start; position: sticky; top: 110px; }

/* ================= Services list ================= */
.svc-list { list-style: none; padding: 0; margin: .8rem 0 0; font-size: .9rem; color: var(--text); }
.svc-list li { display: flex; gap: .5rem; align-items: center; margin-bottom: .25rem; }
.svc-list i { color: var(--accent-2); }

/* ================= Credentials ================= */
.cred-wrap > .tabs { margin-bottom: 2rem; }
.cred h3 { line-height: 1.3; }

/* ================= Testimonials nav ================= */
.t-slider { display: flex; align-items: center; margin-top: 2.5rem; }
.t-track { flex: 1; touch-action: pan-y; }
.t-nav { flex: 0 0 auto; margin: 0 .6rem; }
.quote blockquote { margin: 0; }
.quote figcaption { margin: 0; }

/* ================= Footer ================= */
.foot-copy { text-align: right; }
.socials-sm a { width: 36px; height: 36px; border-radius: 10px; font-size: .95rem; }
.socials-sm { flex-wrap: wrap; }

/* ================= Detail pages ================= */
.detail-hero { padding: 150px 0 50px; overflow: hidden; }
.back-link { display: inline-flex; align-items: center; gap: .5rem; color: var(--muted); font-size: .92rem; margin-bottom: 1.6rem; transition: color .2s, gap .2s; }
.back-link:hover { color: var(--heading); gap: .75rem; }
.tag-pill { display: table; padding: .3rem .9rem; border-radius: 999px; font-size: .78rem; font-weight: 600; background: color-mix(in srgb, var(--accent-1) 18%, transparent); color: var(--accent-2); border: 1px solid color-mix(in srgb, var(--accent-1) 35%, transparent); margin-bottom: 1rem; }
.detail-title { font-size: clamp(2.2rem, 5vw, 3.8rem); max-width: 900px; letter-spacing: -.02em; }
.detail-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 1.5rem; align-items: start; }
.gallery { padding: 12px; }
.g-stage { position: relative; display: grid; border-radius: 12px; overflow: hidden; background: var(--bg-alt); }
.g-stage img { grid-area: 1/1; width: 100%; max-height: 560px; object-fit: contain; opacity: 0; transition: opacity .5s var(--ease); }
.g-stage img.active { opacity: 1; }
.g-nav { position: absolute; top: 50%; transform: translateY(-50%); background: var(--nav-bg); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.g-nav.prev { left: 12px; } .g-nav.next { right: 12px; }
.gallery > div:first-child { position: relative; }
.g-thumbs { display: flex; gap: .5rem; margin-top: .7rem; overflow-x: auto; padding-bottom: 2px; }
.g-thumbs button { flex: 0 0 78px; height: 54px; padding: 0; border-radius: 8px; overflow: hidden; border: 2px solid transparent; background: var(--bg-alt); cursor: pointer; opacity: .55; transition: all .3s; }
.g-thumbs button.active, .g-thumbs button:hover { opacity: 1; border-color: var(--accent-1); }
.g-thumbs img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.detail-info { padding: 1.8rem; position: sticky; top: 110px; }
.h-sm { font-size: 1.15rem; margin-bottom: 1.2rem; }
.meta-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.1rem; }
.meta-list li { display: flex; gap: .9rem; align-items: flex-start; font-size: .93rem; color: var(--heading); }
.meta-list i { flex: 0 0 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--surface-strong); color: var(--accent-2); }
.meta-list span { display: block; color: var(--muted); font-size: .76rem; text-transform: uppercase; letter-spacing: .08em; font-family: 'JetBrains Mono', monospace; }
.detail-body { display: grid; grid-template-columns: 1.6fr 1fr; gap: 1.5rem; margin-top: 1.5rem; }
.card.pad { padding: 1.8rem; }
.card.pad:empty { display: none; }
.adv-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: .8rem 1.4rem; }
.adv-list li { display: flex; gap: .6rem; font-size: .94rem; }
.adv-list i { color: var(--accent-2); margin-top: .15rem; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 3rem; }
.pager a { padding: 1.4rem 1.6rem; display: flex; flex-direction: column; gap: .3rem; }
.pager a.next { text-align: right; }
.pager small { color: var(--muted); font-size: .82rem; }
.pager b { color: var(--heading); font-family: 'Space Grotesk', sans-serif; font-size: 1.05rem; }

@media (max-width: 900px) {
  .detail-grid, .detail-body { grid-template-columns: 1fr; }
  .detail-info, .skills-col { position: static; }
  .adv-list { grid-template-columns: 1fr; }
  .detail-hero { padding-top: 120px; }
  .foot, .foot-copy { justify-content: center; text-align: center; }
}
@media (max-width: 600px) {
  .pager { grid-template-columns: 1fr; }
  .t-nav { display: none; }
}

/* ---------- v4 copy refresh: pillars, skill groups, credential descriptions ---------- */
.pillars { list-style: none; padding: 0; margin: 1.8rem 0 0; display: grid; gap: .9rem; }
.pillars li { display: flex; gap: .9rem; align-items: flex-start; }
.pillars i { flex: 0 0 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-size: 1.1rem;
  color: var(--accent-2); background: color-mix(in srgb, var(--accent-1) 14%, transparent); border: 1px solid var(--border); }
.pillars b { display: block; font-family: 'Space Grotesk'; font-size: 1rem; margin-bottom: .1rem; }
.pillars span { color: var(--muted); font-size: .92rem; }
.about-grid .hero-cta { margin-top: 1.6rem; }
.skills-col { display: grid; gap: 1rem; }
.skill-group { padding: 1.2rem 1.3rem; }
.skill-group h3 { font-size: .78rem; font-family: 'JetBrains Mono'; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-2); margin: 0 0 .8rem; }
.skill-group .chips { gap: .4rem; }
.cred-desc { color: var(--muted); font-size: .86rem; line-height: 1.55; margin: .55rem 0 0; }
.cred .logo-box { flex-basis: 56px; height: 56px; }

/* ---------- 404 page ---------- */
.not-found { min-height: 100vh; display: grid; align-items: center; padding: 140px 0 80px; }
@media (max-width: 600px) { .not-found .blob { width: 260px; height: 260px; } }
.not-found .eyebrow { justify-content: center; }
.not-found .detail-title, .not-found .hero-desc { margin-left: auto; margin-right: auto; }
.not-found .hero-desc { max-width: 560px; }
.not-found .hero-cta { justify-content: center; flex-wrap: wrap; }
.nf-code { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: clamp(6rem, 22vw, 13rem); line-height: .9; letter-spacing: -.04em; margin-bottom: 1rem; }