/* ============================================================
   devbatu — Aydınlık Mühendislik Studio
   Tasarım sistemi · 2026
   Paper + Ink + Engineering Blue · Sharp grid · Space Grotesk
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --paper:      #f5f4ef;
  --paper-2:    #edece4;
  --paper-3:    #e6e4d9;
  --surface:    #ffffff;
  --ink:        #15171d;
  --ink-soft:   #353842;
  --muted:      #5e626d;
  --faint:      #989ba6;
  --line:       #e1dfd4;
  --line-2:     #cfccbe;
  --accent:     #1b3ad9;
  --accent-700: #1430b3;
  --accent-600: #2447e0;
  --accent-50:  #eef1ff;
  --accent-tint:#e4e9ff;
  --spark:      #ff5a1f;
  --ok:         #16915a;

  --dark:       #0f1116;     /* dark inverse sections */
  --dark-2:     #171a21;
  --dark-line:  #2a2e38;
  --dark-text:  #eceae2;
  --dark-muted: #9a9ea9;

  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --maxw: 1240px;
  --gap: clamp(1rem, 3vw, 2rem);
  --radius: 14px;
  --radius-sm: 8px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);

  --shadow-sm: 0 1px 2px rgba(20,22,30,.04), 0 2px 8px rgba(20,22,30,.05);
  --shadow:    0 8px 30px -12px rgba(20,22,30,.18), 0 2px 8px rgba(20,22,30,.05);
  --shadow-lg: 0 30px 70px -28px rgba(20,22,30,.32), 0 8px 24px -12px rgba(20,22,30,.14);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  font-feature-settings: "cv11", "ss01";
  text-rendering: optimizeLegibility;
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

::selection { background: var(--ink); color: var(--paper); }

/* Scrollbar */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 6px; border: 3px solid var(--paper-2); }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.02; letter-spacing: -0.02em; color: var(--ink); }
.display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 0.96;
}
.h1 { font-size: clamp(2.6rem, 7vw, 5.4rem); }
.h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); letter-spacing: -0.03em; }
.h3 { font-size: clamp(1.35rem, 2.4vw, 1.9rem); }
.lead { font-size: clamp(1.05rem, 1.7vw, 1.3rem); color: var(--muted); line-height: 1.65; }
.serif-accent { font-family: var(--font-display); font-style: normal; }
.ink-accent { color: var(--accent); }
.spark { color: var(--spark); }

/* gradient/underline highlight on words */
.mark {
  position: relative;
  white-space: nowrap;
}
.mark::after {
  content: "";
  position: absolute;
  left: -2px; right: -2px; bottom: 0.05em;
  height: 0.32em;
  background: var(--accent-tint);
  z-index: -1;
  transform: skewX(-6deg);
}
.outline-text {
  -webkit-text-stroke: 1.4px var(--ink);
  color: transparent;
}

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2.2rem); }
.wrap--narrow { max-width: 860px; }
.section { padding-block: clamp(4rem, 9vw, 8rem); position: relative; }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--paper2 { background: var(--paper-2); }
.section--dark { background: var(--dark); color: var(--dark-text); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: #fff; }

.grid { display: grid; gap: var(--gap); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }

.stack-sm > * + * { margin-top: .6rem; }
.stack > * + * { margin-top: 1.1rem; }
.stack-lg > * + * { margin-top: 1.8rem; }
.flow { display: flex; gap: .9rem; flex-wrap: wrap; align-items: center; }
.between { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

/* Engineering grid background */
.blueprint {
  background-image:
    linear-gradient(to right, rgba(21,23,29,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(21,23,29,.045) 1px, transparent 1px);
  background-size: 56px 56px;
}
.dotgrid {
  background-image: radial-gradient(circle, rgba(21,23,29,.10) 1px, transparent 1.4px);
  background-size: 26px 26px;
}
.section--dark .blueprint {
  background-image:
    linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
}

/* ---------- Kicker / labels ---------- */
.kicker {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--muted);
  font-weight: 500;
}
.kicker::before {
  content: "";
  width: 22px; height: 2px; background: var(--accent);
}
.kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--spark); }
.section--dark .kicker { color: var(--dark-muted); }

.eyebrow-num { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .18em; color: var(--faint); text-transform: uppercase; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .92rem 1.5rem;
  border-radius: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .98rem;
  letter-spacing: -.01em;
  line-height: 1;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .25s, color .25s, border-color .25s;
  position: relative;
  white-space: nowrap;
}
.btn svg { width: 1.05em; height: 1.05em; }
.btn--primary { background: var(--ink); color: var(--paper); box-shadow: var(--shadow); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn--accent { background: var(--accent); color: #fff; box-shadow: 0 10px 30px -12px rgba(27,58,217,.6); }
.btn--accent:hover { transform: translateY(-2px); background: var(--accent-600); box-shadow: 0 18px 40px -14px rgba(27,58,217,.7); }
.btn--ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line-2); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn--wa { background: #1faa53; color: #fff; box-shadow: 0 10px 30px -12px rgba(31,170,83,.55); }
.btn--wa:hover { transform: translateY(-2px); background: #1c9c4c; }
.btn--lg { padding: 1.1rem 1.9rem; font-size: 1.05rem; }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.section--dark .btn--ghost { color: #fff; border-color: var(--dark-line); }
.section--dark .btn--ghost:hover { border-color: #fff; }
.section--dark .btn--primary { background: #fff; color: var(--ink); }

.link-arrow {
  display: inline-flex; align-items: center; gap: .45rem;
  font-weight: 600; color: var(--accent);
  font-size: .95rem;
}
.link-arrow .arrow { transition: transform .3s var(--ease); }
.link-arrow:hover .arrow { transform: translateX(5px); }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .35s, box-shadow .35s, border-color .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(245,244,239,.82);
  backdrop-filter: saturate(150%) blur(16px);
  -webkit-backdrop-filter: saturate(150%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: inline-flex; align-items: baseline; gap: 0; font-family: var(--font-mono); font-weight: 700; font-size: 1.12rem; letter-spacing: -.02em; }
.brand b { font-weight: 700; }
.brand .b-accent { color: var(--accent); }
.brand .cur { color: var(--spark); animation: blink 1.1s step-end infinite; margin-left: 1px; }
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }

.nav__links { display: flex; align-items: center; gap: 2rem; }
.nav__links a { font-size: .95rem; font-weight: 500; color: var(--ink-soft); position: relative; padding: .3rem 0; transition: color .2s; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0; background: var(--accent); transition: width .3s var(--ease); }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { width: 100%; }
.nav__right { display: flex; align-items: center; gap: 1.1rem; }
.nav__status { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-mono); font-size: .72rem; color: var(--muted); }

.dot-live { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.dot-live::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--ok); animation: ping 2.2s var(--ease) infinite; }
@keyframes ping { 0%{transform:scale(1);opacity:.7} 100%{transform:scale(2.8);opacity:0} }

.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line-2); border-radius: 9px; position: relative; background: var(--surface); }
.burger span { position: absolute; left: 11px; right: 11px; height: 2px; background: var(--ink); transition: transform .3s var(--ease), opacity .2s; }
.burger span:nth-child(1){ top: 15px; } .burger span:nth-child(2){ top: 20px; } .burger span:nth-child(3){ top: 25px; }
.burger.open span:nth-child(1){ transform: translateY(5px) rotate(45deg); }
.burger.open span:nth-child(2){ opacity: 0; }
.burger.open span:nth-child(3){ transform: translateY(-5px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 70px 0 0 0; z-index: 99;
  background: var(--paper);
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: opacity .3s, transform .3s var(--ease);
  padding: 2rem clamp(1.1rem,4vw,2.2rem); overflow-y: auto;
  border-top: 1px solid var(--line);
}
.mobile-menu.open { opacity: 1; transform: none; pointer-events: auto; }
.mobile-menu a { display: block; font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.mobile-menu a small { font-family: var(--font-mono); font-size: .7rem; color: var(--faint); display:block; }

@media (max-width: 900px) {
  .nav__links, .nav__status { display: none; }
  .burger { display: block; }
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 2.4vw, 2rem);
  position: relative;
  overflow: hidden;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .35s;
}
.card::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--line-2); }
.card:hover::before { transform: scaleX(1); }
.card__num { font-family: var(--font-mono); font-size: .72rem; color: var(--faint); letter-spacing: .12em; }
.card__icon {
  width: 50px; height: 50px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--accent-50); color: var(--accent);
  border: 1px solid var(--accent-tint);
  margin-bottom: 1.1rem;
}
.card__icon svg { width: 24px; height: 24px; stroke-width: 1.6; }
.card h3 { margin-bottom: .55rem; }
.card p { color: var(--muted); font-size: .96rem; }

/* tag chips */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1rem; }
.chip {
  font-family: var(--font-mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em;
  padding: .28rem .6rem; border-radius: 6px; background: var(--paper-2); border: 1px solid var(--line);
  color: var(--muted);
}
.section--dark .chip { background: var(--dark-2); border-color: var(--dark-line); color: var(--dark-muted); }

/* status badge */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--font-mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .08em;
  padding: .3rem .65rem; border-radius: 20px;
}
.badge--live { background: rgba(22,145,90,.1); color: #137a4c; border: 1px solid rgba(22,145,90,.25); }
.badge--accent { background: var(--accent-50); color: var(--accent); border: 1px solid var(--accent-tint); }

/* ---------- Service / list rows ---------- */
.svc-row {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1.4rem; align-items: center;
  padding: 1.6rem 0; border-top: 1px solid var(--line);
  transition: padding .4s var(--ease);
}
.svc-row:last-child { border-bottom: 1px solid var(--line); }
.svc-row:hover { padding-left: .8rem; }
.svc-row__no { font-family: var(--font-mono); font-size: .8rem; color: var(--faint); }
.svc-row__title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.2rem,2.2vw,1.7rem); }
.svc-row__desc { color: var(--muted); font-size: .92rem; margin-top: .2rem; max-width: 60ch; }
.svc-row .arrow { color: var(--accent); transition: transform .35s var(--ease); }
.svc-row:hover .arrow { transform: translate(5px,-5px); }

/* ---------- Project / portfolio cards ---------- */
.project {
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .35s;
}
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--line-2); }
.project__visual {
  aspect-ratio: 16/10; position: relative; overflow: hidden;
  background: var(--dark); color: #fff;
  display: grid; place-items: center;
}
.project__visual canvas, .project__visual svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.project__tagword {
  position: relative; z-index: 2; font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.4rem,3vw,2.4rem); letter-spacing: -.03em; text-align: center; padding: 1rem;
}
.project__body { padding: 1.5rem; display: flex; flex-direction: column; flex: 1; }
.project__meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: .7rem; }
.project__cat { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.project h3 { font-size: 1.3rem; margin-bottom: .5rem; }
.project p { color: var(--muted); font-size: .92rem; flex: 1; }

/* ---------- Stats / counters ---------- */
.stat__num { font-family: var(--font-display); font-weight: 600; font-size: clamp(2.4rem,5vw,3.6rem); letter-spacing: -.04em; line-height: 1; }
.stat__num .unit { color: var(--accent); }
.stat__label { font-family: var(--font-mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin-top: .5rem; }

/* ---------- Process steps ---------- */
.step { display: grid; grid-template-columns: auto 1fr; gap: 1.4rem; padding: 1.6rem; border-radius: var(--radius); transition: background .3s; }
.step:hover { background: var(--surface); box-shadow: var(--shadow-sm); }
.step__no { font-family: var(--font-display); font-weight: 600; font-size: 2.4rem; color: var(--accent); line-height: 1; opacity: .85; }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { display: inline-flex; gap: 3rem; white-space: nowrap; will-change: transform; align-items: center; }
.marquee__track span { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.4rem,3vw,2.2rem); color: var(--ink-soft); }
.marquee__track .sep { color: var(--accent); font-size: 1rem; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.4rem 0; cursor: pointer; list-style: none; font-family: var(--font-display); font-weight: 600; font-size: clamp(1.05rem,1.8vw,1.3rem); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ico { flex-shrink: 0; width: 26px; height: 26px; display: grid; place-items: center; border: 1.5px solid var(--line-2); border-radius: 50%; transition: transform .3s, border-color .3s, background .3s; position: relative; }
.faq summary .ico::before, .faq summary .ico::after { content: ""; position: absolute; background: var(--ink); border-radius: 2px; }
.faq summary .ico::before { width: 11px; height: 2px; } .faq summary .ico::after { width: 2px; height: 11px; transition: transform .3s; }
.faq details[open] summary .ico { background: var(--accent); border-color: var(--accent); }
.faq details[open] summary .ico::before, .faq details[open] summary .ico::after { background: #fff; }
.faq details[open] summary .ico::after { transform: scaleY(0); }
.faq details[open] summary { color: var(--accent); }
.faq__body { padding: 0 0 1.5rem; color: var(--muted); max-width: 72ch; }

/* ---------- Breadcrumb ---------- */
.crumb { font-family: var(--font-mono); font-size: .76rem; color: var(--muted); letter-spacing: .04em; display: flex; gap: .5rem; flex-wrap: wrap; }
.crumb a:hover { color: var(--accent); }
.crumb span { color: var(--faint); }

/* ---------- Page hero (inner pages) ---------- */
.phero { padding-top: 9rem; padding-bottom: 3rem; position: relative; overflow: hidden; }
.phero .blueprint { position: absolute; inset: 0; opacity: .6; z-index: 0; -webkit-mask-image: radial-gradient(120% 100% at 50% 0, #000 30%, transparent 75%); mask-image: radial-gradient(120% 100% at 50% 0, #000 30%, transparent 75%); }
.phero > .wrap { position: relative; z-index: 1; }

/* ---------- Hero (home) ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; padding-top: 70px; }
#hero-canvas { position: absolute; inset: 0; z-index: 0; }
.hero__grid { position: absolute; inset: 0; z-index: 0; opacity: .55; -webkit-mask-image: radial-gradient(130% 90% at 70% 40%, #000 20%, transparent 70%); mask-image: radial-gradient(130% 90% at 70% 40%, #000 20%, transparent 70%); }
.hero .wrap { position: relative; z-index: 2; width: 100%; }
.hero__title { font-size: clamp(2.7rem, 7.2vw, 6rem); }
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line > span { display: inline-block; }

/* split text helpers (JS adds .word/.char) */
.word { display: inline-block; overflow: hidden; vertical-align: top; }
.word > span { display: inline-block; }

/* floating callout */
.float-card {
  position: absolute; background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow-lg); padding: .85rem 1.1rem; font-size: .85rem; z-index: 3;
}

/* ---------- Logo cloud / clients ---------- */
.logo-cloud { display: flex; flex-wrap: wrap; gap: 1.4rem 2.6rem; align-items: center; }
.logo-cloud span { font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; color: var(--faint); transition: color .3s; }
.logo-cloud span:hover { color: var(--ink); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--ink); color: var(--paper); border-radius: clamp(16px, 3vw, 28px); padding: clamp(2.4rem, 6vw, 5rem); position: relative; overflow: hidden; }
.cta-band h2 { color: #fff; }
.cta-band .blueprint { position: absolute; inset: 0; opacity: 1; }

/* ---------- Footer ---------- */
.footer { background: var(--dark); color: var(--dark-text); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; }
.footer a { color: var(--dark-muted); transition: color .2s; }
.footer a:hover { color: #fff; }
.footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem; }
@media (max-width: 800px) { .footer__top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer__top { grid-template-columns: 1fr; } }
.footer h4 { font-family: var(--font-mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; color: var(--dark-muted); margin-bottom: 1.1rem; font-weight: 500; }
.footer ul { display: flex; flex-direction: column; gap: .6rem; font-size: .95rem; }
.footer__brand .brand { color: #fff; font-size: 1.3rem; }
.footer__bottom { margin-top: 3rem; padding-top: 1.6rem; border-top: 1px solid var(--dark-line); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font-family: var(--font-mono); font-size: .74rem; color: var(--dark-muted); }

/* ---------- Floating WhatsApp ---------- */
.wa-float { position: fixed; right: 1.3rem; bottom: 1.3rem; z-index: 90; width: 58px; height: 58px; border-radius: 50%; background: #1faa53; color: #fff; display: grid; place-items: center; box-shadow: 0 14px 34px -10px rgba(31,170,83,.6); transition: transform .35s var(--ease); animation: floaty 3.5s ease-in-out infinite; }
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 28px; height: 28px; }
@keyframes floaty { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-6px) } }

/* ---------- Reveal animations (JS-driven) ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(28px); }
.js [data-reveal="left"] { transform: translateX(-30px); }
.js [data-reveal="right"] { transform: translateX(30px); }
.js [data-reveal="scale"] { transform: scale(.95); }
/* fallback: if reduced motion, show immediately */
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

/* utilities */
.muted { color: var(--muted); }
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.hr { height: 1px; background: var(--line); border: 0; }
.hr--grad { height: 1px; border: 0; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }
.maxch { max-width: 62ch; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2.2rem; } .mt-6 { margin-top: 3.4rem; }
.mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2.2rem; } .mb-6 { margin-bottom: 3.4rem; }
.pill { display:inline-flex; align-items:center; gap:.5rem; padding:.45rem .9rem; border:1px solid var(--line-2); border-radius:30px; background:var(--surface); font-size:.82rem; font-weight:500; }
.feature-list { display: grid; gap: .8rem; }
.feature-list li { display: grid; grid-template-columns: auto 1fr; gap: .7rem; align-items: start; color: var(--ink-soft); }
.feature-list .tick { width: 22px; height: 22px; border-radius: 6px; background: var(--accent-50); color: var(--accent); display: grid; place-items: center; flex-shrink: 0; margin-top: 2px; }
.feature-list .tick svg { width: 13px; height: 13px; stroke-width: 2.5; }

/* split layout */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split--rev { grid-template-columns: 1fr 1.1fr; }
@media (max-width: 860px) { .split, .split--rev { grid-template-columns: 1fr; } }

/* code panel decorative */
.code-panel { background: var(--dark); border-radius: var(--radius); border: 1px solid var(--dark-line); overflow: hidden; font-family: var(--font-mono); box-shadow: var(--shadow-lg); }
.code-panel__bar { display: flex; align-items: center; gap: .5rem; padding: .8rem 1rem; border-bottom: 1px solid var(--dark-line); }
.code-panel__bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.code-panel__bar i:nth-child(1){background:#ff5f57} .code-panel__bar i:nth-child(2){background:#febc2e} .code-panel__bar i:nth-child(3){background:#28c840}
.code-panel__bar .name { margin-left: .6rem; color: var(--dark-muted); font-size: .76rem; }
.code-panel pre { padding: 1.2rem 1.3rem; color: #d7dae3; font-size: .82rem; line-height: 1.75; overflow-x: auto; }
.code-panel .ln { color: #4a4f5c; user-select: none; margin-right: 1.1rem; }
.tok-key { color: #79b8ff; } .tok-str { color: #9ecbff; } .tok-fn { color: #b392f0; } .tok-com { color: #6a737d; } .tok-num { color: #f8c555; }