/* =========================================================
   UP RISING — shared core (tokens, theme, motion primitives)
   Every design sample builds on top of this file.
   ========================================================= */

:root {
  /* Noir (dark) — default */
  --bg: #0a0907;
  --bg-2: #12100c;
  --bg-3: #1b1812;
  --ink: #efe8da;
  --ink-soft: #cfc6b4;
  --mute: #8f8776;
  --gold: #c9a55c;
  --gold-2: #e8d197;
  --gold-3: #8a6d32;
  --line: rgba(201, 165, 92, 0.22);
  --line-soft: rgba(239, 232, 218, 0.08);
  --shade: rgba(5, 4, 3, 0.62);
  --veil: #0a0907;

  --ease-lux: cubic-bezier(0.22, 1, 0.36, 1);       /* soft expo-out */
  --ease-curtain: cubic-bezier(0.77, 0, 0.18, 1);   /* in-out for curtains */
  --ease-silk: cubic-bezier(0.65, 0.05, 0.36, 1);

  --t-fast: 0.6s;
  --t-med: 1s;
  --t-slow: 1.4s;

  --gutter: clamp(16px, 4vw, 72px);
  color-scheme: dark;
}

/* Ivory (light) — white, black & gold */
:root[data-theme="light"] {
  --bg: #fbf8f2;
  --bg-2: #f3eee3;
  --bg-3: #e9e1d1;
  --ink: #0e0d0b;
  --ink-soft: #2c2924;
  --mute: #6e6658;
  --gold: #9a7631;
  --gold-2: #c29d52;
  --gold-3: #6f5420;
  --line: rgba(154, 118, 49, 0.32);
  --line-soft: rgba(14, 13, 11, 0.09);
  --shade: rgba(10, 9, 7, 0.45);
  --veil: #fbf8f2;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--gold); color: var(--bg); }

/* Smooth theme change: only while switching */
html.theme-anim, html.theme-anim *, html.theme-anim *::before, html.theme-anim *::after {
  transition: background-color 0.9s var(--ease-lux), color 0.9s var(--ease-lux),
              border-color 0.9s var(--ease-lux), fill 0.9s var(--ease-lux),
              stroke 0.9s var(--ease-lux) !important;
}

/* ---------- Logo ---------- */
.ur-logo { display: inline-block; width: 52px; height: 52px; color: var(--gold); }
.ur-logo svg { width: 100%; height: 100%; overflow: visible; }

/* ---------- Gold text ---------- */
.gold-text {
  background: linear-gradient(100deg, var(--gold-3) 0%, var(--gold) 30%, var(--gold-2) 50%, var(--gold) 70%, var(--gold-3) 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: goldShift 9s var(--ease-silk) infinite alternate;
}
@keyframes goldShift { to { background-position: 100% 0; } }

/* ---------- Reveal primitives ---------- */
[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 38px, 0);
  transition: opacity 1.4s var(--ease-lux), transform 1.6s var(--ease-lux);
  transition-delay: var(--d, 0s);
}
[data-reveal].in { opacity: 1; transform: none; }

[data-reveal="fade"] { transform: none; }

[data-reveal="mask"] { opacity: 1; transform: none; }
[data-reveal="mask"] .ln { display: block; overflow: hidden; padding-bottom: 0.06em; }
[data-reveal="mask"] .ln > span {
  display: block;
  transform: translate3d(0, 108%, 0);
  transition: transform 1.5s var(--ease-lux);
  transition-delay: calc(var(--d, 0s) + var(--i, 0) * 0.11s);
}
[data-reveal="mask"].in .ln > span { transform: none; }

[data-reveal="img"] { opacity: 1; transform: none; clip-path: inset(100% 0 0 0); transition: clip-path 1.8s var(--ease-curtain); transition-delay: var(--d, 0s); }
[data-reveal="img"] img { transform: scale(1.18); transition: transform 2.4s var(--ease-lux); transition-delay: var(--d, 0s); }
[data-reveal="img"].in { clip-path: inset(0 0 0 0); }
[data-reveal="img"].in img { transform: scale(1); }

[data-reveal="line"] { opacity: 1; transform: scaleX(0); transform-origin: left; transition: transform 1.8s var(--ease-curtain); transition-delay: var(--d, 0s); }
[data-reveal="line"].in { transform: scaleX(1); }

/* ---------- Buttons & links ---------- */
.btn-lux {
  position: relative;
  display: inline-flex; align-items: center; gap: 14px;
  padding: 17px 34px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase;
  overflow: hidden; isolation: isolate;
  transition: color 0.9s var(--ease-lux), transform 0.6s var(--ease-lux);
}
.btn-lux::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--gold);
  transform: scaleY(0); transform-origin: bottom;
  transition: transform 0.9s var(--ease-curtain);
}
.btn-lux:hover { color: var(--bg); }
.btn-lux:hover::before { transform: scaleY(1); transform-origin: top; }
.btn-lux:active { transform: scale(0.985); }
.btn-lux .arw { width: 26px; height: 1px; background: currentColor; position: relative; transition: width 0.9s var(--ease-lux); }
.btn-lux .arw::after { content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }
.btn-lux:hover .arw { width: 40px; }

.link-lux {
  position: relative; display: inline-block; padding-bottom: 6px;
}
.link-lux::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: currentColor; transform-origin: right; transform: scaleX(1);
  transition: transform 0.9s var(--ease-curtain);
}
.link-lux:hover::after { animation: linkSweep 1.1s var(--ease-curtain); }
@keyframes linkSweep {
  0% { transform: scaleX(1); transform-origin: right; }
  49% { transform: scaleX(0); transform-origin: right; }
  50% { transform: scaleX(0); transform-origin: left; }
  100% { transform: scaleX(1); transform-origin: left; }
}

.u-hover { position: relative; }
.u-hover::after {
  content: ""; position: absolute; left: 0; bottom: -4px; width: 100%; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right; transition: transform 0.9s var(--ease-curtain);
}
.u-hover:hover::after, .u-hover.active::after { transform: scaleX(1); transform-origin: left; }

/* ---------- Theme toggle ---------- */
.theme-toggle {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--ink-soft);
}
.theme-toggle .track {
  position: relative; width: 46px; height: 22px; border: 1px solid var(--line); border-radius: 22px;
  transition: border-color 0.9s var(--ease-lux);
}
.theme-toggle .knob {
  position: absolute; top: 3px; left: 3px; width: 14px; height: 14px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--gold-2), var(--gold) 60%, var(--gold-3));
  transition: transform 1s var(--ease-curtain);
}
:root[data-theme="light"] .theme-toggle .knob { transform: translateX(24px); }
.theme-toggle .lbl { position: relative; display: inline-block; height: 1.2em; overflow: hidden; min-width: 3.6em; }
.theme-toggle .lbl span { display: block; transition: transform 1s var(--ease-curtain); }
:root[data-theme="light"] .theme-toggle .lbl span { transform: translateY(-100%); }
.theme-toggle:hover .track { border-color: var(--gold); }

/* ---------- Page veil (smooth enter/leave) ---------- */
.veil {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  background: var(--veil);
  transform: translateY(0);
  transition: transform 1.2s var(--ease-curtain);
  display: grid; place-items: center;
}
.veil::after {
  content: ""; width: 120px; height: 1px; background: var(--gold);
  transform: scaleX(0); animation: veilLine 1s var(--ease-lux) forwards;
}
@keyframes veilLine { to { transform: scaleX(1); } }
.veil.out { transform: translateY(-100%); }
.veil.leave { transform: translateY(0); transition: transform 0.95s var(--ease-curtain); }
.veil.prep { transform: translateY(100%); transition: none; }

/* ---------- Utility ---------- */
.eyebrow { font-size: 11px; letter-spacing: 0.42em; text-transform: uppercase; color: var(--gold); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.grain::before {
  content: ""; position: fixed; inset: -50%; z-index: 9000; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain { 0%{transform:translate(0,0)} 25%{transform:translate(-3%,2%)} 50%{transform:translate(2%,-3%)} 75%{transform:translate(-2%,-1%)} 100%{transform:translate(1%,3%)} }

/* Sample switcher (review aid only) */
.sample-tag {
  position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 8000;
  display: flex; align-items: center; gap: 2px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line); border-radius: 40px; padding: 5px;
  font: 500 10px/1 system-ui, sans-serif; letter-spacing: 0.18em; text-transform: uppercase;
}
.sample-tag a { padding: 8px 11px; border-radius: 30px; color: var(--mute); transition: color .6s var(--ease-lux), background .6s var(--ease-lux); }
.sample-tag a:hover { color: var(--ink); }
.sample-tag a.on { background: var(--gold); color: var(--bg); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  [data-reveal], [data-reveal] * { opacity: 1 !important; transform: none !important; clip-path: none !important; }
}