/* =========================================================
   SWAPPI — Design tokens & base styles
   Warm orange × electric blue × charcoal × cream
   ========================================================= */

:root {
  /* — color */
  --orange: oklch(0.72 0.17 48);
  --orange-deep: oklch(0.62 0.18 42);
  --orange-soft: oklch(0.92 0.06 65);
  --blue: oklch(0.48 0.20 256);
  --blue-deep: oklch(0.36 0.18 258);
  --blue-soft: oklch(0.92 0.05 250);

  --ink: oklch(0.18 0.01 60);
  --ink-2: oklch(0.32 0.01 60);
  --ink-3: oklch(0.52 0.01 60);
  --ink-4: oklch(0.70 0.01 60);

  --char: oklch(0.16 0.008 60);
  --char-2: oklch(0.22 0.008 60);
  --char-3: oklch(0.30 0.008 60);

  --cream: oklch(0.975 0.01 80);
  --cream-2: oklch(0.95 0.013 80);
  --cream-3: oklch(0.91 0.018 78);
  --paper: oklch(0.99 0.005 80);

  --line: color-mix(in oklch, var(--ink) 12%, transparent);
  --line-soft: color-mix(in oklch, var(--ink) 6%, transparent);
  --line-dark: color-mix(in oklch, white 10%, transparent);

  --success: oklch(0.62 0.16 152);
  --danger:  oklch(0.58 0.20 28);

  /* — type */
  --f-serif: "Instrument Serif", "Cormorant Garamond", Georgia, serif;
  --f-sans:  "Nunito", "Helvetica Neue", system-ui, sans-serif;
  --f-mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* — geometry */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  --shadow-1: 0 1px 0 rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-2: 0 2px 8px rgba(20,15,10,0.06), 0 8px 24px rgba(20,15,10,0.05);
  --shadow-3: 0 12px 40px rgba(20,15,10,0.10), 0 4px 12px rgba(20,15,10,0.06);

  --max: 1320px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* — type rhythm */
.display {
  font-family: var(--f-serif);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.08;
  font-optical-sizing: auto;
}
.eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.dark .eyebrow { color: rgba(255,255,255,0.55); }

/* — section padding */
.section { padding: clamp(64px, 9vw, 140px) 0; position: relative; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 32px; }

/* — buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  transition: transform .2s cubic-bezier(.2,.7,.2,1), background .2s, color .2s, border-color .2s, box-shadow .2s;
  white-space: nowrap;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--orange);
  color: #1a0e00;
}
.btn-primary:hover { background: var(--orange-deep); color: #fff; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: var(--blue-deep); }
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--cream); border-color: var(--ink); }
.dark .btn-ghost { color: #fff; border-color: rgba(255,255,255,.25); }
.dark .btn-ghost:hover { background: #fff; color: var(--char); border-color: #fff; }

.btn-sm { height: 36px; padding: 0 14px; font-size: 13px; }
.btn-lg { height: 56px; padding: 0 28px; font-size: 16px; }

/* — pill / chip */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 28px; padding: 0 12px;
  border-radius: var(--r-pill);
  font-size: 12px; font-weight: 500;
  background: var(--cream-2);
  color: var(--ink-2);
  border: 1px solid var(--line-soft);
}
.pill-orange { background: color-mix(in oklch, var(--orange) 18%, var(--cream)); color: oklch(0.32 0.12 45); border-color: transparent; }
.pill-blue   { background: color-mix(in oklch, var(--blue) 14%, var(--cream)); color: oklch(0.32 0.14 256); border-color: transparent; }
.pill-dark   { background: rgba(255,255,255,0.08); color: #fff; border-color: rgba(255,255,255,0.12); }

/* — card */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform .25s cubic-bezier(.2,.7,.2,1), box-shadow .25s, border-color .2s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); }

/* — surface variants */
.surface-dark {
  background: var(--char);
  color: var(--cream);
  position: relative;
  overflow: hidden;
}
.surface-dark::before {
  /* grain */
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.5 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/></svg>");
  opacity: 0.05;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 1;
}
.surface-dark > * { position: relative; z-index: 2; }

/* — placeholders (striped image stand-ins) */
.ph {
  position: relative;
  background:
    repeating-linear-gradient(135deg,
      color-mix(in oklch, currentColor 6%, transparent) 0 1px,
      transparent 1px 14px),
    color-mix(in oklch, var(--ink) 4%, var(--cream-2));
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.ph-label {
  position: absolute; inset: auto 12px 12px 12px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.ph-dark {
  background:
    repeating-linear-gradient(135deg,
      rgba(255,255,255,0.04) 0 1px,
      transparent 1px 14px),
    color-mix(in oklch, var(--char-2) 92%, var(--orange) 8%);
  color: rgba(255,255,255,0.5);
  border-color: rgba(255,255,255,0.08);
}

/* — animated gradient mesh hero bg */
.mesh-bg {
  position: absolute; inset: -20%;
  background:
    radial-gradient(40% 50% at 20% 30%, color-mix(in oklch, var(--orange) 38%, transparent), transparent 70%),
    radial-gradient(45% 55% at 80% 60%, color-mix(in oklch, var(--blue) 30%, transparent), transparent 70%),
    radial-gradient(35% 40% at 60% 20%, color-mix(in oklch, var(--orange) 22%, transparent), transparent 70%),
    radial-gradient(40% 45% at 30% 80%, color-mix(in oklch, var(--blue) 26%, transparent), transparent 70%);
  filter: blur(40px) saturate(1.1);
  animation: drift 28s ease-in-out infinite alternate;
  z-index: 0;
}
@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) scale(1.02); }
  50%  { transform: translate3d(-3%, 2%, 0) scale(1.08); }
  100% { transform: translate3d(2%, -2%, 0) scale(1.04); }
}

/* — gradient text */
.grad-text {
  background: linear-gradient(95deg, var(--orange) 0%, var(--orange-deep) 35%, var(--blue) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradslide 9s ease-in-out infinite alternate;
}
@keyframes gradslide {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

/* — scroll reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* — page-frame nav */
.nav-shell {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  background: color-mix(in oklch, var(--cream) 75%, transparent);
  border-bottom: 1px solid var(--line);
}
.dark .nav-shell {
  background: color-mix(in oklch, var(--char) 70%, transparent);
  border-bottom: 1px solid var(--line-dark);
  color: #fff;
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex; align-items: center; gap: 32px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-serif);
  font-size: 26px;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: var(--ink);
  position: relative;
  overflow: hidden;
}
.brand-mark::before, .brand-mark::after {
  content: ""; position: absolute; inset: 0;
}
.brand-mark::before {
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}
.brand-mark::after {
  background: var(--blue);
  clip-path: polygon(100% 100%, 100% 0, 0 100%);
  mix-blend-mode: normal;
  opacity: 0.95;
  transform: translate(0,0);
}
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-links a {
  padding: 8px 14px;
  border-radius: var(--r-pill);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: background .2s, color .2s;
  cursor: pointer;
}
.nav-links a:hover { background: var(--cream-2); color: var(--ink); }
.nav-links a.active { background: var(--ink); color: var(--cream); }
.dark .nav-links a { color: rgba(255,255,255,0.7); }
.dark .nav-links a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.dark .nav-links a.active { background: var(--orange); color: var(--char); }

/* — footer */
.foot {
  background: var(--char);
  color: var(--cream);
  padding: 80px 0 32px;
  position: relative;
  overflow: hidden;
}
.foot .wrap { position: relative; z-index: 2; }
.foot a { color: rgba(255,255,255,0.7); }
.foot a:hover { color: var(--orange); }

/* — focus */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: 4px;
}

/* — utility */
.row { display: flex; }
.col { display: flex; flex-direction: column; }
.gap-4 { gap: 4px; } .gap-8 { gap: 8px; } .gap-12 { gap: 12px; }
.gap-16 { gap: 16px; } .gap-24 { gap: 24px; } .gap-32 { gap: 32px; }
.center { align-items: center; }
.between { justify-content: space-between; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; } .mt-48 { margin-top: 48px; }
.text-mono { font-family: var(--f-mono); }
.text-serif { font-family: var(--f-serif); }
.muted { color: var(--ink-3); }
.dark .muted { color: rgba(255,255,255,0.6); }

/* — avatar */
.av {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  background: var(--cream-3);
  color: var(--ink-2);
  font-weight: 600;
  font-size: 13px;
  flex-shrink: 0;
  border: 2px solid var(--paper);
  position: relative;
}
.av-sm { width: 28px; height: 28px; font-size: 11px; }
.av-md { width: 40px; height: 40px; font-size: 14px; }
.av-lg { width: 64px; height: 64px; font-size: 22px; }
.av-xl { width: 96px; height: 96px; font-size: 32px; }
.av-stack { display: flex; }
.av-stack .av + .av { margin-left: -10px; }
.av-verified::after {
  content: "✓";
  position: absolute;
  right: -4px; bottom: -4px;
  width: 18px; height: 18px;
  background: var(--blue);
  color: #fff;
  border-radius: 50%;
  font-size: 10px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--paper);
}

/* — rating */
.rating { display: inline-flex; align-items: center; gap: 3px; font-weight: 600; font-size: 13px; }
.rating::before { content: "★"; color: var(--orange); }

/* — modal */
.modal-veil {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(10,8,6,0.55);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 32px;
  animation: fadein .25s ease;
}
.modal {
  background: var(--paper);
  border-radius: var(--r-xl);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow-3);
  animation: pop .35s cubic-bezier(.2,.7,.2,1);
}
@keyframes fadein { from { opacity: 0 } to { opacity: 1 } }
@keyframes pop { from { opacity: 0; transform: translateY(20px) scale(.97) } to { opacity: 1; transform: none } }

/* — toast */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 1100;
  background: var(--ink); color: var(--cream);
  padding: 14px 18px;
  border-radius: var(--r-md);
  font-size: 14px;
  box-shadow: var(--shadow-3);
  animation: pop .3s cubic-bezier(.2,.7,.2,1);
}

/* — confetti burst (CTA hover) */
.confetti { position: absolute; pointer-events: none; }
.confetti span {
  position: absolute; width: 6px; height: 8px;
  border-radius: 2px;
  animation: burst .9s ease-out forwards;
}
@keyframes burst {
  0% { transform: translate(0,0) rotate(0); opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) rotate(360deg); opacity: 0; }
}

/* — input */
.input {
  height: 46px;
  padding: 0 16px;
  border-radius: var(--r-md);
  background: var(--paper);
  border: 1px solid var(--line);
  font-family: inherit; font-size: 15px;
  color: var(--ink);
  transition: border-color .15s, box-shadow .15s, background .15s;
  width: 100%;
}
.input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--blue) 14%, transparent);
}
.input:disabled { background: var(--cream-2); color: var(--ink-3); }
.input.error { border-color: var(--danger); box-shadow: 0 0 0 4px color-mix(in oklch, var(--danger) 14%, transparent); }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 12px; font-weight: 600; letter-spacing: 0.02em; color: var(--ink-2); }
.field .err { font-size: 12px; color: var(--danger); }

/* — skeleton */
@keyframes shimmer { 0% { background-position: -200% 0 } 100% { background-position: 200% 0 } }
.skel {
  background: linear-gradient(90deg, var(--cream-2) 0%, var(--cream-3) 50%, var(--cream-2) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
  border-radius: 8px;
}

/* — marquee */
.marquee {
  display: flex;
  gap: 64px;
  animation: marquee 38s linear infinite;
  white-space: nowrap;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee-wrap {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

/* — scrollbar (subtle) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: color-mix(in oklch, var(--ink) 18%, transparent); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: color-mix(in oklch, var(--ink) 32%, transparent); }

/* ============================================================
   RESPONSIVE GRID HELPERS  (desktop defaults, overridden below)
   ============================================================ */
/* compact rating row: visible only on mobile (toggled in media query) */
.sc-rating-mob { display: none; }

.grid-2     { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3     { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4     { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.grid-trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }

/* ============================================================
   MOBILE  (≤ 768 px)
   ============================================================ */
@media (max-width: 768px) {
  /* — layout */
  .wrap    { padding: 0 12px; }
  .section { padding: 48px 0; }

  /* — nav */
  .nav-inner { padding: 12px 16px; gap: 10px; }
  .nav-links    { display: none !important; }
  .nav-mob-btn  { display: flex !important; }
  .nav-user-row { display: none !important; }

  /* — grids — all 2-per-row on mobile */
  .grid-2     { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-3     { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-4     { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-steps { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .grid-trust { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  /* — grid override utilities */
  .grid-mob-1 { grid-template-columns: 1fr !important; }
  .grid-mob-3 { grid-template-columns: repeat(3, 1fr) !important; gap: 8px !important; }

  /* — metric widget: compact for 2-per-row */
  .metric-card  { padding: 12px !important; }
  .metric-val   { font-size: 24px !important; margin-top: 4px !important; }
  .metric-orb   { width: 50px !important; height: 50px !important; }

  /* — skill card: compact for 2-per-row */
  .sc-body        { padding: 10px !important; }
  .sc-title       { font-size: 14px !important; margin-bottom: 8px !important; line-height: 1.25 !important; }
  .sc-meta        { display: none !important; }
  .sc-rating-mob  { display: flex !important; }
  .sc-swap-pill   { display: none !important; }
  .sc-per-session { display: none !important; }
  .sc-price       { font-size: 15px !important; }
  .sc-price-from  { display: none !important; }
  /* rank badge pill */
  .rank-badge     { font-size: 10px !important; padding: 2px 7px !important; }

  /* — workshop card: compact for 2-per-row */
  .wc-body        { padding: 12px !important; }
  .wc-title       { font-size: 16px !important; margin: 10px 0 4px !important; line-height: 1.2 !important; }
  .wc-host        { display: none !important; }
  .wc-bottom      { padding-top: 12px !important; margin-top: 12px !important; }
  .wc-seat-dots   { display: none !important; }
  .wc-btns        { margin-top: 8px !important; gap: 6px !important; }
  .wc-btn-detail  { display: none !important; }
  .wc-btn-reserve { flex: 1 !important; justify-content: center !important; }

  /* — disable card hover lift (touch devices) */
  .card:hover { transform: none; box-shadow: var(--shadow-1); }

  /* — footer */
  .foot      { padding: 40px 0 24px; }
  .foot-cols { grid-template-columns: 1fr 1fr !important; gap: 32px !important; }
  .foot-brand { grid-column: 1 / -1; }

  /* — modal → bottom sheet */
  .modal-veil { padding: 0 !important; align-items: flex-end !important; }
  .modal {
    border-radius: var(--r-xl) var(--r-xl) 0 0 !important;
    max-width: 100% !important;
    max-height: 94vh;
  }

  /* — toast sits above mobile bottom tab bar */
  .toast { left: 12px; right: 12px; bottom: 80px; }

  /* — utility classes for JSX */
  .mob-hide   { display: none !important; }
  .mob-block  { display: block !important; }
  .mob-col    { flex-direction: column !important; align-items: flex-start !important; }
  .mob-wrap   { flex-wrap: wrap !important; }
  .mob-center { text-align: center !important; justify-content: center !important; }
  .mob-full   { width: 100% !important; max-width: none !important; }
  .mob-p16    { padding: 16px !important; }
  .mob-gap8   { gap: 8px !important; }
}