/* =============================================================================
   ITQAN STORE — DESIGN SYSTEM v2 (style.css)
   -----------------------------------------------------------------------------
   Aesthetic: "precision atelier" — a flagship PC-builder brand. Crisp white
   LIGHT theme by default, near-black onyx DARK theme via toggle. One confident
   brand-red accent (#E63030). Latin text renders in Space Grotesk, Arabic in
   IBM Plex Sans Arabic, engineering labels in IBM Plex Mono.
   Motion: transform/opacity only, 150–300ms, spring-flavored curves, all
   disabled under prefers-reduced-motion. WCAG AA contrast in BOTH themes.
   ========================================================================== */

/* ---------------------------------------------------------------- tokens
   Brand palette: WHITE (warm ivory) + ORANGE (burnt/citrus) + BROWN (espresso
   ink). Light is the DEFAULT; dark is a warm espresso variant, not navy. */
:root {
  /* LIGHT (default) — white + red + charcoal (elegant, high-contrast) */
  --bg: #f6f6f7;
  --bg-raised: #ffffff;
  --surface: #ffffff;
  --surface-2: #eeeef0;
  --text: #16161a;
  --text-2: #64646d;
  --border: #e7e7ea;
  --border-strong: #d3d3d8;

  --accent: #cc2027;             /* refined red — ~5:1 on white */
  --accent-strong: #a81a20;
  --accent-deep: #85141a;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(230, 48, 48, 0.08);
  --accent-line: rgba(214, 32, 40, 0.32);
  --accent-glow: 0 10px 30px rgba(214, 32, 40, 0.26);
  --accent-grad: linear-gradient(135deg, #e12b30, #b81d24);
  --accent-bright: #e63030;      /* brand red — decorative (lines, glows, display) */

  --danger: #b3141b;
  --danger-soft: rgba(179, 20, 27, 0.07);
  --success: #15803d;
  --success-soft: rgba(21, 128, 61, 0.09);
  --warning: #b45309;
  --warning-soft: rgba(180, 83, 9, 0.1);

  --shadow-1: 0 1px 2px rgba(15, 15, 20, 0.06), 0 4px 14px rgba(15, 15, 20, 0.07);
  --shadow-2: 0 10px 26px rgba(15, 15, 20, 0.1), 0 24px 60px rgba(15, 15, 20, 0.12);
  --card-edge: inset 0 1px 0 rgba(255, 255, 255, 0.9);

  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 20px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 140ms;
  --dur-med: 240ms;

  /* Latin glyphs -> Space Grotesk, Arabic glyphs -> IBM Plex Sans Arabic */
  --font: 'Space Grotesk', 'IBM Plex Sans Arabic', 'Segoe UI', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
  --header-h: 72px;

  color-scheme: light;
}

[data-theme='dark'] {
  /* ONYX — near-black darks with bright red soul */
  --bg: #0a0a0c;
  --bg-raised: #121216;
  --surface: #16161b;
  --surface-2: #1f1f26;
  --text: #f3f3f5;
  --text-2: #9d9da7;
  --border: #29292f;
  --border-strong: #3a3a42;

  --accent: #ff5c5c;
  --accent-strong: #ff8585;
  --accent-deep: #f4433a;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(255, 92, 92, 0.1);
  --accent-line: rgba(255, 92, 92, 0.3);
  --accent-glow: 0 8px 30px rgba(244, 67, 58, 0.32);
  --accent-grad: linear-gradient(135deg, #f04148, #c21f26);
  --accent-bright: #ff5c5c;

  --danger: #ff8a8a;
  --danger-soft: rgba(255, 138, 138, 0.1);
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.1);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.12);

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.6), 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.55), 0 24px 64px rgba(0, 0, 0, 0.5);
  --card-edge: inset 0 1px 0 rgba(255, 255, 255, 0.05);

  color-scheme: dark;
}

/* ----------------------------------------------------------------- reset */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  transition: background var(--dur-med) var(--ease), color var(--dur-med) var(--ease);
  -webkit-font-smoothing: antialiased;
}

/* Ensure the [hidden] attribute always wins over author `display` rules
   (e.g. .login-gate{display:grid}, .btn{display:inline-flex}, .cart-badge). */
[hidden] { display: none !important; }

img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; padding: 0; }
a { color: var(--accent); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, dl, dd, dt { margin: 0; }
code { font-family: var(--mono); }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-s);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; inset-inline-start: 12px; top: -52px; z-index: 300;
  background: var(--accent); color: var(--accent-contrast);
  padding: 10px 18px; border-radius: 0 0 var(--radius-m) var(--radius-m);
  text-decoration: none; font-weight: 600;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 0; }

.container { max-width: 1240px; margin-inline: auto; padding-inline: clamp(18px, 4vw, 44px); }

/* --------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 46px; padding: 11px 26px;
  border: 1px solid transparent; border-radius: var(--radius-m);
  font-weight: 600; letter-spacing: 0.01em; text-decoration: none;
  transition: transform var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              opacity var(--dur-fast) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }

.btn--primary {
  background: var(--accent-grad);
  color: var(--accent-contrast);
  box-shadow: var(--accent-glow);
}
.btn--primary:hover:not(:disabled) { box-shadow: var(--accent-glow), 0 6px 18px rgba(0,0,0,.25); }

.btn--ghost {
  background: transparent; color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover { background: var(--surface-2); border-color: var(--accent-line); }

.btn--small { min-height: 36px; padding: 6px 16px; font-size: 0.875rem; border-radius: 9px; }
.btn--lg { min-height: 52px; padding: 13px 32px; font-size: 1.02rem; }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
.site-header__inner { height: 100%; display: flex; align-items: center; gap: 16px; }
.site-header__actions { display: flex; align-items: center; gap: 10px; margin-inline-start: auto; }

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand__logo { display: grid; place-items: center; }
.brand__logo-bg { fill: var(--surface-2); transition: fill var(--dur-med) var(--ease); }
.brand__logo-fg { fill: var(--accent); }
.brand__text { display: grid; line-height: 1.25; }
.brand__mark { font-weight: 700; font-size: 1.14rem; letter-spacing: 0.02em; }
.brand__mark i { font-style: normal; color: var(--accent); margin-inline: 5px; }
.brand__tag { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.22em; color: var(--text-2); text-transform: uppercase; }

.lang-toggle {
  font-family: var(--mono); font-size: 0.8rem; font-weight: 500;
  min-height: 42px; padding: 8px 16px;
  color: var(--text); border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface);
  transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.lang-toggle:hover { border-color: var(--accent-line); background: var(--surface-2); transform: translateY(-1px); }
.lang-toggle:active { transform: scale(0.96); }

.icon-btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border); border-radius: var(--radius-m);
  background: var(--surface);
  transition: background-color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease);
}
.icon-btn:hover { background: var(--surface-2); border-color: var(--accent-line); transform: translateY(-1px); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 20px; height: 20px; }

/* animated sun/moon crossfade (transform + opacity only) */
.theme-toggle { overflow: hidden; }
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: transform var(--dur-med) var(--spring), opacity var(--dur-med) var(--ease);
}
.theme-toggle .icon-sun { opacity: 1; transform: rotate(0) scale(1); color: var(--accent); }
.theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.4); }
[data-theme='dark'] .theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.4); }
[data-theme='dark'] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0) scale(1); color: var(--accent); }

.cart-badge {
  position: absolute; top: -6px; inset-inline-end: -6px;
  min-width: 20px; height: 20px; padding-inline: 5px;
  display: grid; place-items: center;
  background: var(--accent-grad); color: var(--accent-contrast);
  font-size: 0.72rem; font-weight: 700; border-radius: 999px;
}

/* ------------------------------------------------------------------ hero */
.hero { position: relative; overflow: hidden; }

/* atmosphere: amber orb + engineering grid + film grain */
.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.hero__bg::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(640px 460px at 18% 0%, var(--accent-soft), transparent 65%),
    radial-gradient(520px 420px at 88% 90%, var(--accent-soft), transparent 70%),
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: auto, auto, 64px 64px, 64px 64px;
  opacity: 0.5;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 98%);
          mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 98%);
}
.hero__bg::after {
  /* film grain — kills the flat "AI gradient" look */
  content: ''; position: absolute; inset: 0; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero__inner {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.8fr);
  align-items: center; gap: clamp(28px, 5vw, 72px);
  padding-block: clamp(56px, 10vh, 110px) clamp(40px, 7vh, 80px);
}

.hero__kicker {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 0.76rem; font-weight: 500;
  letter-spacing: 0.1em; color: var(--accent);
  margin-bottom: 24px;
}
.hero__kicker .tick { width: 36px; height: 1px; background: var(--accent); position: relative; }
.hero__kicker .tick::after {
  content: ''; position: absolute; inset-inline-end: 0; top: -2.5px;
  width: 6px; height: 6px; border-radius: 999px; background: var(--accent);
}

.hero h1 {
  font-size: clamp(2.5rem, 6.6vw, 4.6rem);
  font-weight: 700; line-height: 1.16; letter-spacing: -0.015em;
  margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}

.hero__sub {
  font-size: clamp(1rem, 1.5vw, 1.14rem); font-weight: 300;
  color: var(--text-2); max-width: 34em; margin-bottom: 34px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: clamp(36px, 6vh, 60px); }

.hero__stats {
  display: flex; flex-wrap: wrap; gap: clamp(24px, 4vw, 56px);
  padding-top: 26px; border-top: 1px solid var(--border);
}
.hero__stat dt {
  font-size: 1.3rem; font-weight: 700;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero__stat dd { font-size: 0.83rem; color: var(--text-2); }

/* entrance (staggered, fill-mode both) */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero__kicker, .hero h1, .hero__sub, .hero__actions, .hero__stats, .hero__visual {
  animation: rise-in 520ms var(--ease-out) both;
}
.hero h1 { animation-delay: 70ms; }
.hero__sub { animation-delay: 140ms; }
.hero__actions { animation-delay: 210ms; }
.hero__stats { animation-delay: 300ms; }
.hero__visual { animation-delay: 180ms; }

/* --- the rig visual ------------------------------------------------ */
.hero__visual { display: grid; place-items: center; }
.rig { position: relative; width: min(320px, 72vw); }

.rig__ring {
  position: absolute; inset: -9% -14%;
  border-radius: 999px;
  background: conic-gradient(from 120deg, transparent 0 68%, var(--accent-line) 82%, transparent 96%);
  -webkit-mask: radial-gradient(closest-side, transparent 78%, #000 79% 100%);
          mask: radial-gradient(closest-side, transparent 78%, #000 79% 100%);
  animation: ring-spin 26s linear infinite;
  opacity: 0.8;
}
@keyframes ring-spin { to { transform: rotate(360deg); } }

/* warm halo behind the tower — instant depth on the ivory background */
.rig::before {
  content: ''; position: absolute; inset: -14%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(230, 48, 48, 0.2), transparent 62%);
  pointer-events: none;
}

/* The tower is rendered in fixed onyx + brand-red so it stays rich and vivid
   in BOTH themes. */
.rig__tower { position: relative; width: 100%; height: auto; filter: drop-shadow(0 26px 48px rgba(10, 10, 12, 0.4)); }
.rig__shell { fill: #17171b; stroke: #34343c; stroke-width: 2; }
.rig__glass { fill: rgba(230, 48, 48, 0.12); stroke: #e63030; stroke-width: 1.5; }
.rig__glare { stroke: #e63030; stroke-width: 1; opacity: 0.35; }
.rig__hub { fill: #e63030; }
.rig__fan {
  fill: none; stroke: #e63030; stroke-width: 2.5;
  stroke-dasharray: 14 10; stroke-linecap: round;
  transform-box: fill-box; transform-origin: center;
}
.rig__fan--spin { animation: fan-spin 7s linear infinite; }
.rig__fan--spin2 { animation: fan-spin 5s linear infinite reverse; opacity: 0.8; }
@keyframes fan-spin { to { transform: rotate(360deg); } }
.rig__slot { fill: #34343c; }
.rig__vent { fill: none; stroke: #34343c; stroke-width: 2; stroke-dasharray: 3 6; }
.rig__led { fill: #5bd992; }

.rig__chip {
  position: absolute;
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.08em;
  color: var(--text); background: var(--bg-raised);
  border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 6px 13px; box-shadow: var(--shadow-1);
  animation: chip-float 5.5s var(--ease) infinite alternate;
}
.rig__chip--1 { top: 8%; inset-inline-start: -14%; animation-delay: 0s; }
.rig__chip--2 { top: 44%; inset-inline-end: -20%; animation-delay: 1.2s; border-color: var(--accent-line); color: var(--accent); }
.rig__chip--3 { bottom: 6%; inset-inline-start: -6%; animation-delay: 2.2s; }
@keyframes chip-float {
  from { transform: translateY(-5px); }
  to   { transform: translateY(6px); }
}

/* --- brands marquee -------------------------------------------------- */
.marquee {
  position: relative; overflow: hidden;
  border-top: 1px solid var(--border);
  padding-block: 18px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12% 88%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 12% 88%, transparent);
}
.marquee__track {
  display: inline-flex; gap: 56px; white-space: nowrap; padding-inline-start: 56px;
  animation: marquee 36s linear infinite;
  direction: ltr;
}
.marquee__track span {
  font-family: var(--mono); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.3em; color: var(--text-2); opacity: 0.75;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* -------------------------------------------------------------- sections */
.section { padding-block: clamp(44px, 7vh, 84px); }
.section--alt {
  background: var(--bg-raised);
  border-block: 1px solid var(--border);
}

.section__head { margin-bottom: clamp(24px, 4vh, 38px); max-width: 720px; }
.eyebrow {
  display: flex; align-items: center; gap: 14px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.06em;
  color: var(--accent); margin-bottom: 14px;
}
.eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--accent); }
.eyebrow code {
  margin-inline-start: auto;
  font-size: 0.66rem; letter-spacing: 0.18em; color: var(--text-2); opacity: 0.7;
}
.section__title {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 700; letter-spacing: -0.01em; line-height: 1.25;
}
.section__sub { color: var(--text-2); font-weight: 300; margin-top: 10px; }

/* scroll-reveal utility (transform/opacity only) */
.reveal { opacity: 0; transform: translateY(22px); }
.reveal.is-in {
  opacity: 1; transform: translateY(0);
  transition: opacity 520ms var(--ease-out), transform 520ms var(--ease-out);
  transition-delay: calc(var(--i, 0) * 70ms);
}

/* -------------------------------------------------------------- features
   Tidy white cards energized by a gradient tick + filled gradient icon. */
.feat-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.feat {
  padding: 24px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--card-edge), var(--shadow-1);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.feat:hover { transform: translateY(-5px); border-color: var(--accent-line); box-shadow: var(--card-edge), var(--shadow-2); }
.feat__icon {
  display: inline-grid; place-items: center;
  width: 44px; height: 44px; margin-bottom: 16px;
  color: #fff; background: var(--accent-grad);
  border-radius: 12px;
  box-shadow: var(--accent-glow);
  transition: transform var(--dur-fast) var(--spring);
}
.feat:hover .feat__icon { transform: translateY(-2px) rotate(-4deg); }
.feat__icon svg { width: 22px; height: 22px; }
.feat h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.feat p { font-size: 0.88rem; font-weight: 300; color: var(--text-2); }

/* ----------------------------------------------------------------- steps
   Tidy cards on the cream band, numbered with vivid gradient figures. */
.steps {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.step {
  position: relative; padding: 26px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--card-edge), var(--shadow-1);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.step:hover { transform: translateY(-5px); border-color: var(--accent-line); box-shadow: var(--card-edge), var(--shadow-2); }
.step__num {
  display: block;
  font-family: var(--mono); font-size: 2.5rem; font-weight: 700; line-height: 1;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  margin-bottom: 14px;
}
.step h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 0.88rem; font-weight: 300; color: var(--text-2); }

/* --------------------------------------------------------------- builder */
.builder { padding-block: clamp(48px, 8vh, 90px) clamp(64px, 9vh, 110px); }

/* live status bar */
.status-bar {
  position: sticky; top: calc(var(--header-h) + 10px); z-index: 50;
  display: flex; align-items: center; gap: 12px;
  padding: 13px 18px; margin-bottom: 26px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-inline-start: 3px solid var(--border-strong);
  border-radius: var(--radius-m); box-shadow: var(--shadow-1);
  transition: border-color var(--dur-med) var(--ease);
}
.status-bar[data-status='ok'] { border-inline-start-color: var(--success); }
.status-bar[data-status='ok'] .status-bar__icon { color: var(--success); }
.status-bar[data-status='warning'] { border-inline-start-color: var(--warning); }
.status-bar[data-status='warning'] .status-bar__icon { color: var(--warning); }
.status-bar[data-status='conflict'] { border-inline-start-color: var(--danger); }
.status-bar[data-status='conflict'] .status-bar__icon { color: var(--danger); }
.status-bar__icon { display: grid; place-items: center; color: var(--text-2); }
.status-bar__msg { font-weight: 500; font-size: 0.93rem; }
.status-bar__meta {
  margin-inline-start: auto; display: flex; align-items: center; gap: 14px;
  font-size: 0.85rem; color: var(--text-2); white-space: nowrap;
}
.status-bar__segments { display: inline-flex; gap: 3px; }
.status-bar__segments i {
  width: 12px; height: 5px; border-radius: 3px;
  background: var(--surface-2); border: 1px solid var(--border);
  transition: background-color var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.status-bar__segments i.is-on { background: var(--accent); border-color: var(--accent); }
.status-bar__segments i.is-bad { background: var(--danger); border-color: var(--danger); }
.status-bar__count { font-family: var(--mono); font-size: 0.78rem; }
.status-bar__total { font-weight: 700; color: var(--accent); font-size: 0.98rem; }

/* layout: category rail + parts grid */
.builder__layout {
  display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 26px;
  align-items: start;
}

.category-nav {
  display: grid; gap: 8px;
  position: sticky; top: calc(var(--header-h) + 82px);
}
.cat-item {
  display: flex; align-items: center; gap: 13px; text-align: start;
  width: 100%; padding: 13px 15px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--card-edge);
  transition: border-color var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease);
}
.cat-item:hover { border-color: var(--accent-line); transform: translateY(-1px); }
.cat-item.is-active { border-color: var(--accent); background: var(--accent-soft); }
.cat-item.has-conflict { border-color: var(--danger); }

.cat-item__state {
  flex: none; width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 9px;
  font-family: var(--mono); font-size: 0.72rem; font-weight: 500;
  background: var(--surface-2); color: var(--text-2);
  border: 1px solid var(--border);
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.cat-item__state--done { background: var(--success-soft); color: var(--success); border-color: transparent; }
.cat-item__state--conflict { background: var(--danger-soft); color: var(--danger); border-color: transparent; font-weight: 700; }

.cat-item__body { display: grid; min-width: 0; }
.cat-item__label { font-weight: 600; font-size: 0.92rem; }
.cat-item__part {
  font-size: 0.76rem; color: var(--text-2);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cat-item__part--empty { opacity: 0.7; }
.cat-item__price { font-size: 0.76rem; font-weight: 600; color: var(--accent); }

/* parts area */
.parts-area__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.parts-area__head h3 { font-size: 1.32rem; font-weight: 700; }
.parts-area__hint { font-size: 0.82rem; color: var(--text-2); font-weight: 300; }

.parts-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(238px, 1fr));
  gap: 18px;
}

/* ------------------------------------------------------------- part card */
@keyframes card-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.part-card {
  border-radius: var(--radius-l);
  animation: card-in 360ms var(--ease-out) both;
  animation-delay: calc(var(--i, 0) * 45ms);
  transition: transform var(--dur-med) var(--ease), filter var(--dur-med) var(--ease);
}
.part-card:hover { transform: translateY(-4px); }

.part-card__btn {
  display: grid; width: 100%; text-align: start; padding: 0;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--card-edge);
  transition: border-color var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease),
              box-shadow var(--dur-med) var(--ease);
}
.part-card:hover .part-card__btn { box-shadow: var(--card-edge), var(--shadow-1); border-color: var(--border-strong); }
.part-card__btn:active { transform: scale(0.99); }

.part-card__media {
  position: relative; display: block; overflow: hidden;
  background: linear-gradient(165deg, #16161b, #24242c);
  border-bottom: 1px solid var(--border);
}
.part-card__media img {
  width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover;
  transition: transform 340ms var(--ease);
}
.part-card:hover .part-card__media img { transform: scale(1.045); }

@keyframes badge-pop {
  from { opacity: 0; transform: scale(0.6); }
  to   { opacity: 1; transform: scale(1); }
}
.part-card__badge {
  position: absolute; top: 10px; inset-inline-start: 10px;
  padding: 4px 12px; border-radius: 999px;
  font-size: 0.73rem; font-weight: 700;
  background: var(--danger); color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  animation: badge-pop 220ms var(--spring) both;
}
.part-card__badge--selected { background: var(--success); color: #06220f; }

.part-card__info { display: grid; gap: 8px; padding: 16px; }
.part-card__name { font-weight: 600; font-size: 0.97rem; line-height: 1.45; }
.part-card__blurb { font-size: 0.8rem; font-weight: 300; color: var(--text-2); line-height: 1.6; }
.part-card__chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-family: var(--mono); font-size: 0.66rem; font-weight: 500;
  padding: 3px 10px; letter-spacing: 0.03em;
  background: var(--surface-2); color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 999px; white-space: nowrap;
}
.part-card__price {
  font-size: 1.12rem; font-weight: 700; color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* selected */
.part-card.is-selected .part-card__btn {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: var(--card-edge), var(--accent-glow);
}

/* incompatible — dimmed but clickable to reveal WHY */
.part-card.is-incompatible .part-card__btn {
  border-color: color-mix(in srgb, var(--danger) 50%, var(--border));
  background: var(--danger-soft);
}
.part-card.is-incompatible .part-card__media img { opacity: 0.4; filter: saturate(0.5); }
.part-card.is-incompatible .part-card__name,
.part-card.is-incompatible .part-card__price { opacity: 0.72; }
.part-card.is-incompatible:hover { transform: none; }

/* inline explanation panel (spans the whole grid row) */
@keyframes panel-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reason-panel {
  grid-column: 1 / -1;
  background: var(--surface);
  border: 1.5px solid color-mix(in srgb, var(--danger) 45%, var(--border));
  border-inline-start: 3px solid var(--danger);
  border-radius: var(--radius-m);
  padding: 18px 20px;
  animation: panel-in var(--dur-med) var(--ease-out) both;
}
.reason-panel__head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 10px;
}
.reason-panel__close {
  flex: none; width: 32px; height: 32px; border-radius: var(--radius-s);
  background: var(--surface-2); color: var(--text-2);
  display: grid; place-items: center;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.reason-panel__close:hover { background: var(--danger-soft); color: var(--danger); }
.reason-panel__list { display: grid; gap: 6px; margin-bottom: 14px; }
.reason-panel__list li {
  position: relative; padding-inline-start: 20px;
  font-size: 0.9rem;
}
.reason-panel__list li::before {
  content: '✕'; position: absolute; inset-inline-start: 0;
  color: var(--danger); font-weight: 700; font-size: 0.78rem;
}
.reason-panel__alt-title { font-size: 0.84rem; font-weight: 600; color: var(--text-2); margin-bottom: 10px; }
.reason-panel__alts { display: grid; gap: 10px; }
.alt-card {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 10px 14px;
  background: var(--success-soft);
  border: 1px solid color-mix(in srgb, var(--success) 35%, var(--border));
  border-radius: var(--radius-m);
}
.alt-card__info { display: grid; min-width: 0; }
.alt-card__name { font-weight: 600; font-size: 0.9rem; }
.alt-card__price { font-size: 0.82rem; color: var(--accent); font-weight: 700; }

/* ------------------------------------------------------------------ cart */
.cart-overlay {
  position: fixed; inset: 0; z-index: 140;
  background: rgba(5, 7, 11, 0.55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-med) var(--ease);
}
.cart-overlay.is-visible { opacity: 1; pointer-events: auto; }

.cart-panel {
  position: fixed; top: 0; bottom: 0; inset-inline-end: 0; z-index: 150;
  width: min(400px, 100vw);
  display: flex; flex-direction: column;
  background: var(--bg-raised);
  border-inline-start: 1px solid var(--border);
  box-shadow: var(--shadow-2);
  /* Hidden off-canvas toward the physical inline-end side */
  transform: translateX(-105%);
  transition: transform 300ms var(--ease);
}
[dir='ltr'] .cart-panel { transform: translateX(105%); }
.cart-panel.is-open { transform: translateX(0) !important; }

.cart-panel__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--border);
}
.cart-panel__head h2 { font-size: 1.15rem; font-weight: 700; }

.cart-items { flex: 1; overflow-y: auto; padding: 12px 22px; display: grid; gap: 10px; align-content: start; }

.cart-item {
  display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto auto;
  gap: 2px 12px; align-items: center;
  padding: 12px 14px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-m);
}
.cart-item__cat {
  grid-column: 1;
  font-family: var(--mono); font-size: 0.64rem; font-weight: 500;
  color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase;
}
.cart-item__name { grid-column: 1; font-size: 0.88rem; font-weight: 500; line-height: 1.5; }
.cart-item__price { grid-column: 2; grid-row: 2; font-weight: 700; font-size: 0.88rem; font-variant-numeric: tabular-nums; }
.cart-item__remove {
  grid-column: 2; grid-row: 1; justify-self: end;
  width: 28px; height: 28px; border-radius: var(--radius-s);
  color: var(--text-2); font-size: 0.8rem;
  display: grid; place-items: center;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.cart-item__remove:hover { background: var(--danger-soft); color: var(--danger); }

.cart-empty { text-align: center; padding: 48px 12px; color: var(--text-2); }
.cart-empty p:first-child { font-weight: 600; font-size: 1.05rem; color: var(--text); margin-bottom: 6px; }
.cart-empty__hint { font-size: 0.85rem; font-weight: 300; }

.cart-panel__foot {
  padding: 18px 22px 22px; border-top: 1px solid var(--border);
  display: grid; gap: 12px; background: var(--surface);
}
.cart-total-row { display: flex; justify-content: space-between; align-items: baseline; }
.cart-total-row span { color: var(--text-2); font-size: 0.9rem; }
.cart-total-row b { font-size: 1.4rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.cart-compat { font-size: 0.82rem; min-height: 1.2em; }
.cart-compat[data-status='ok'] { color: var(--success); }
.cart-compat[data-status='warning'] { color: var(--warning); }
.cart-compat[data-status='conflict'] { color: var(--danger); }

/* ----------------------------------------------------------------- toast */
.toast {
  position: fixed; bottom: 24px; inset-inline-start: 50%; z-index: 180;
  transform: translate(50%, 16px);
  max-width: min(440px, calc(100vw - 32px));
  padding: 12px 22px;
  background: var(--text); color: var(--bg);
  border-radius: 999px; font-size: 0.9rem; font-weight: 500;
  box-shadow: var(--shadow-2);
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--spring);
}
[dir='ltr'] .toast { transform: translate(-50%, 16px); }
.toast.is-visible { opacity: 1; transform: translate(50%, 0); }
[dir='ltr'] .toast.is-visible { transform: translate(-50%, 0); }

/* -------------------------------------------------------- whatsapp float */
.wa-fab {
  position: fixed; bottom: 22px; left: 22px; z-index: 130;
  display: inline-flex; align-items: center; gap: 0;
  height: 58px; border-radius: 999px;
  background: #25D366; color: #fff;
  box-shadow: 0 8px 24px -6px rgba(37, 211, 102, 0.6), var(--shadow-1);
  overflow: hidden; white-space: nowrap;
  transition: transform var(--dur-fast) var(--spring), gap var(--dur-med) var(--ease), padding var(--dur-med) var(--ease);
  padding: 0; width: 58px;
}
.wa-fab__icon { flex: none; width: 58px; height: 58px; display: grid; place-items: center; }
.wa-fab__icon svg { width: 30px; height: 30px; }
.wa-fab__label { max-width: 0; opacity: 0; font-weight: 700; font-size: 0.9rem; transition: max-width var(--dur-med) var(--ease), opacity var(--dur-fast) var(--ease); }
.wa-fab:hover, .wa-fab:focus-visible {
  transform: translateY(-3px); width: auto; padding-inline-end: 20px; outline: none;
}
.wa-fab:hover .wa-fab__label, .wa-fab:focus-visible .wa-fab__label { max-width: 200px; opacity: 1; }
.wa-fab:active { transform: scale(0.94); }
.wa-fab::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); animation: wa-pulse 2.4s ease-out infinite;
}
@keyframes wa-pulse { 70% { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0); } 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); } }
@media (prefers-reduced-motion: reduce) { .wa-fab::before { animation: none; } }

/* ---------------------------------------------------- footer social icons */
.social-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.social-link {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-2);
  transition: transform var(--dur-fast) var(--spring), color var(--dur-fast) var(--ease),
              background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.social-link svg { width: 20px; height: 20px; }
.social-link:hover, .social-link:focus-visible {
  color: #fff; background: var(--sc, var(--accent)); border-color: var(--sc, var(--accent));
  transform: translateY(-2px); outline: none;
}

/* ------------------------------------------------------------------ chat */
.chat-toggle {
  position: fixed; bottom: 22px; right: 22px; z-index: 130;
  width: 58px; height: 58px; border-radius: 999px;
  background: var(--accent-grad); color: var(--accent-contrast);
  box-shadow: var(--accent-glow), var(--shadow-1);
  display: grid; place-items: center;
  transition: transform var(--dur-fast) var(--spring);
}
.chat-toggle:hover { transform: translateY(-3px) scale(1.05); }
.chat-toggle:active { transform: scale(0.93); }
.chat-toggle svg { width: 26px; height: 26px; }

.chat-panel {
  position: fixed; bottom: 92px; right: 22px; z-index: 135;
  width: min(392px, calc(100vw - 32px));
  height: min(568px, calc(100dvh - 130px));
  display: flex; flex-direction: column;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong); border-radius: var(--radius-l);
  box-shadow: var(--shadow-2);
  opacity: 0; pointer-events: none;
  transform: translateY(14px) scale(0.96);
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--spring);
}
.chat-panel.is-open { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }

.chat-panel__head {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
}
.chat-panel__title { font-weight: 700; font-size: 0.98rem; margin-inline-end: auto; display: grid; }
.chat-panel__title small { font-weight: 300; font-size: 0.7rem; color: var(--text-2); }

.chat-head-btn {
  border: 1px solid var(--border); background: var(--surface);
  border-radius: var(--radius-s); padding: 6px 10px;
  font-size: 0.74rem; color: var(--text-2); min-height: 32px;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.chat-head-btn:hover { background: var(--surface-2); color: var(--text); }

.chat-messages {
  flex: 1; overflow-y: auto; padding: 16px;
  display: flex; flex-direction: column; gap: 10px;
}

@keyframes bubble-in {
  from { opacity: 0; transform: translateY(7px); }
  to   { opacity: 1; transform: translateY(0); }
}
.chat-msg {
  max-width: 88%; padding: 10px 14px; border-radius: var(--radius-m);
  font-size: 0.88rem; line-height: 1.7;
  animation: bubble-in 200ms var(--ease-out) both;
  overflow-wrap: break-word;
}
.chat-msg--model {
  align-self: flex-start;
  background: var(--surface); border: 1px solid var(--border);
  border-start-start-radius: 4px;
}
.chat-msg--user {
  align-self: flex-end;
  background: var(--accent-grad); color: var(--accent-contrast);
  border-start-end-radius: 4px;
}
.chat-msg--error { border-color: color-mix(in srgb, var(--danger) 50%, var(--border)); color: var(--danger); }
.chat-bullet { display: block; padding-inline-start: 14px; position: relative; }
.chat-bullet::before { content: '•'; position: absolute; inset-inline-start: 0; color: var(--accent); }

.chat-typing { display: inline-flex; gap: 4px; padding: 4px 2px; }
.chat-typing i {
  width: 6px; height: 6px; border-radius: 999px; background: var(--text-2);
  animation: typing-bounce 900ms var(--ease) infinite;
}
.chat-typing i:nth-child(2) { animation-delay: 150ms; }
.chat-typing i:nth-child(3) { animation-delay: 300ms; }
@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-4px); opacity: 1; }
}

.chat-chips { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.chat-chip {
  text-align: start; padding: 9px 14px;
  background: var(--accent-soft); color: var(--text);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-m); font-size: 0.82rem;
  transition: transform var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.chat-chip:hover { transform: translateY(-1px); background: color-mix(in srgb, var(--accent) 16%, var(--surface)); }

.chat-build-card {
  align-self: stretch;
  border: 1.5px solid var(--accent-line);
  background: var(--accent-soft);
  border-radius: var(--radius-m); padding: 14px;
  display: grid; gap: 8px;
  animation: bubble-in 220ms var(--ease-out) both;
}
.chat-build-card__title { font-weight: 700; font-size: 0.9rem; }
.chat-build-card__status { font-size: 0.8rem; }
.chat-build-card__status[data-status='ok'] { color: var(--success); }
.chat-build-card__status[data-status='warn'] { color: var(--warning); }
.chat-build-card__specs {
  width: 100%; font: inherit; font-size: 0.76rem; line-height: 1.7;
  color: var(--text); background: var(--bg-raised);
  border: 1px solid var(--border); border-radius: var(--radius-s);
  padding: 10px 12px; resize: vertical; white-space: pre; overflow: auto;
}
.chat-build-card__actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chat-build-card__actions .chat-build-card__apply { flex: 1 1 auto; }
.btn--wa {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: #25D366; color: #fff; border: none;
  border-radius: var(--radius-s); padding: 8px 14px; font-weight: 700;
  min-height: 40px; text-decoration: none;
  transition: transform var(--dur-fast) var(--spring), filter var(--dur-fast) var(--ease);
}
.btn--wa::before { content: ''; width: 15px; height: 15px; background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath d='M16 3.2A12.8 12.8 0 0 0 4.9 22.4L3.2 28.8l6.6-1.7A12.8 12.8 0 1 0 16 3.2Zm5.8 15.1c-.3.9-1.6 1.6-2.2 1.6-.6.1-1.3.1-2-.1-.5-.2-1-.3-1.8-.7-3.2-1.4-5.3-4.6-5.4-4.8-.2-.2-1.3-1.7-1.3-3.3 0-1.5.8-2.3 1.1-2.6.3-.3.6-.4.9-.4h.6c.2 0 .5-.1.7.5.3.6.9 2.2 1 2.4.1.2.1.3 0 .5-.3.6-.5.8-.7 1-.2.2-.4.5-.2.8.2.3.9 1.5 1.9 2.4 1.3 1.1 2.3 1.4 2.6 1.6.3.1.5.1.7-.1.2-.2.8-1 1-1.3.2-.3.4-.2.7-.1.3.1 1.9.9 2.2 1.1.3.2.5.2.6.4.1.1.1.7-.2 1.5Z'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath d='M16 3.2A12.8 12.8 0 0 0 4.9 22.4L3.2 28.8l6.6-1.7A12.8 12.8 0 1 0 16 3.2Zm5.8 15.1c-.3.9-1.6 1.6-2.2 1.6-.6.1-1.3.1-2-.1-.5-.2-1-.3-1.8-.7-3.2-1.4-5.3-4.6-5.4-4.8-.2-.2-1.3-1.7-1.3-3.3 0-1.5.8-2.3 1.1-2.6.3-.3.6-.4.9-.4h.6c.2 0 .5-.1.7.5.3.6.9 2.2 1 2.4.1.2.1.3 0 .5-.3.6-.5.8-.7 1-.2.2-.4.5-.2.8.2.3.9 1.5 1.9 2.4 1.3 1.1 2.3 1.4 2.6 1.6.3.1.5.1.7-.1.2-.2.8-1 1-1.3.2-.3.4-.2.7-.1.3.1 1.9.9 2.2 1.1.3.2.5.2.6.4.1.1.1.7-.2 1.5Z'/%3E%3C/svg%3E") center/contain no-repeat; }
.btn--wa:hover { transform: translateY(-1px); filter: brightness(1.05); }

/* ------------------------------------------------------- export dialog */
.export-modal {
  width: min(560px, calc(100vw - 28px)); border: 1px solid var(--border-strong);
  border-radius: var(--radius-l); background: var(--bg-raised); color: var(--text);
  padding: 0; box-shadow: var(--shadow-2);
}
.export-modal::backdrop { background: rgba(10, 10, 14, 0.55); backdrop-filter: blur(3px); }
.export-modal__head { display: flex; align-items: center; gap: 10px; padding: 16px 18px 4px; }
.export-modal__title { font-weight: 700; font-size: 1.05rem; margin-inline-end: auto; }
.export-modal__hint { padding: 0 18px; margin: 2px 0 12px; font-size: 0.82rem; color: var(--text-2); }
.export-modal__text {
  display: block; width: calc(100% - 36px); margin: 0 18px; font: inherit; font-size: 0.82rem; line-height: 1.7;
  color: var(--text); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-m); padding: 12px 14px; resize: vertical; white-space: pre; overflow: auto;
}
.export-modal__actions { display: flex; flex-wrap: wrap; gap: 10px; padding: 14px 18px 18px; }
.export-modal__actions .btn--wa { flex: 1 1 auto; padding: 11px 16px; min-height: 46px; }
.export-modal__actions .btn--ghost { flex: 0 0 auto; }

.chat-setup { padding: 8px 4px; display: grid; gap: 10px; }
.chat-setup__title { font-weight: 700; }
.chat-setup__text { font-size: 0.84rem; color: var(--text-2); line-height: 1.8; }
.chat-setup__form { display: grid; gap: 10px; }
.chat-setup__form input {
  min-height: 44px; padding: 10px 14px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-m);
  background: var(--surface); color: var(--text); font: inherit;
}
.chat-setup__form input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.chat-form {
  display: flex; gap: 8px; padding: 12px;
  border-top: 1px solid var(--border); background: var(--surface);
  border-radius: 0 0 var(--radius-l) var(--radius-l);
}
.chat-form input {
  flex: 1; min-width: 0; min-height: 44px; padding: 10px 14px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-m);
  background: var(--bg-raised); color: var(--text); font: inherit; font-size: 0.9rem;
}
.chat-form input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.chat-form button { flex: none; }

/* ---------------------------------------------------------------- footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-raised); }
.site-footer__grid {
  display: grid; grid-template-columns: minmax(0, 1.4fr) auto auto;
  gap: 32px 64px; padding-block: 44px 28px;
}
.site-footer__brand { font-weight: 700; font-size: 1.25rem; margin-bottom: 10px; }
.site-footer__brand i { font-style: normal; color: var(--accent); margin-inline: 6px; }
.site-footer__tag { font-size: 0.87rem; font-weight: 300; color: var(--text-2); max-width: 38em; }
.site-footer__col { display: grid; gap: 8px; align-content: start; }
.site-footer__col h3 {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-2);
  margin-bottom: 6px;
}
.site-footer__col a {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--text); text-decoration: none; font-size: 0.9rem;
  transition: color var(--dur-fast) var(--ease);
}
.site-footer__col a:hover { color: var(--accent); }
.site-footer__base {
  display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; justify-content: space-between;
  padding-block: 18px; border-top: 1px solid var(--border);
  font-size: 0.8rem; color: var(--text-2);
}
.site-footer__base code { font-size: 0.64rem; letter-spacing: 0.2em; opacity: 0.6; }

/* ------------------------------------------------------------- responsive */
@media (max-width: 1020px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; padding-top: 10px; }
  .rig { width: min(250px, 62vw); }

  .builder__layout { grid-template-columns: 1fr; }
  .category-nav {
    position: static;
    grid-auto-flow: column; grid-auto-columns: minmax(200px, 1fr);
    overflow-x: auto; padding-bottom: 8px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }
  .cat-item { scroll-snap-align: start; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 26px; }
}

@media (max-width: 640px) {
  .status-bar { flex-wrap: wrap; row-gap: 6px; top: calc(var(--header-h) + 6px); }
  .status-bar__meta { margin-inline-start: 0; width: 100%; justify-content: space-between; }

  .parts-grid { grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 12px; }
  .part-card__info { padding: 12px; }

  .hero__stats { gap: 16px 26px; }
  .hero__actions .btn { flex: 1; min-width: 150px; }
  .brand__tag { display: none; }
  .rig__chip--1 { inset-inline-start: -4%; }
  .rig__chip--2 { inset-inline-end: -6%; }

  .chat-panel { inset-inline: 16px; width: auto; }
}

/* --------------------------------------------------- reduced motion (a11y) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .marquee__track { animation: none; }
  .reveal { opacity: 1; transform: none; }
}