/* Thermal shared site styles (Martori Studio).
   The design system for the marketing pages: tokens, type, buttons, the nav,
   the footer, scroll reveals, and a small kit of reusable page components.
   Matches index.html exactly so nothing looks bolted on. No em dashes. */

:root, [data-theme="dark"] {
  --bg: #18130E;
  --surface: #221B15;
  --surface-2: #2C241C;
  --ink: #F8F3EB;
  --ink-soft: #D5CBBB;
  --muted: #A39988;
  --line: #3B332B;

  --heat-amber: #E89A45;
  --heat-ember: #CE4E22;
  --heat-core: #FBE7BB;

  --cool: #9DA9AF;
  --cool-deep: #C9D2D6;
  --cool-line: #49525A;
  --cool-wash: rgba(120, 135, 142, 0.12);

  --shadow: 0 24px 60px -28px rgba(0,0,0,0.78);
  --shadow-sm: 0 12px 32px -20px rgba(0,0,0,0.6);

  --maxw: 820px;
  --maxw-wide: 1060px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ring: 0 0 0 3px color-mix(in srgb, var(--heat-amber) 40%, transparent);
  --elev-1: 0 1px 0 color-mix(in srgb, var(--ink) 5%, transparent), 0 10px 30px -22px rgba(0,0,0,0.7);
  --elev-2: 0 1px 0 color-mix(in srgb, var(--ink) 6%, transparent), 0 26px 64px -30px rgba(0,0,0,0.82);
  --glass: color-mix(in srgb, var(--surface) 64%, transparent);
}
[data-theme="light"] {
  --bg: #F4F0E8;
  --surface: #FFFFFF;
  --surface-2: #F6F1E8;
  --ink: #1E1913;
  --ink-soft: #463F36;
  --muted: #6C6356;
  --line: #E4DBCD;

  --heat-amber: #C5742A;
  --heat-ember: #B23E1A;

  --cool: #5C696F;
  --cool-deep: #3D484E;
  --cool-line: #C8D0D3;
  --cool-wash: #EAEEEE;

  --shadow: 0 22px 56px -30px rgba(58,42,26,0.30);
  --shadow-sm: 0 10px 30px -20px rgba(58,42,26,0.20);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Hanken Grotesk", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 9999; 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='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
a { color: inherit; }

.col { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.col.wide { max-width: var(--maxw-wide); }
@media (max-width: 640px) { .col { padding: 0 20px; } }

/* ---------- type ---------- */
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted); margin: 0 0 22px; }
.section-eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); margin: 0 0 30px; }
.kicker { font-size: 12px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--heat-amber); margin: 0 0 18px; }
.h-xl { font-size: clamp(38px, 7vw, 72px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.0; margin: 0 0 22px; }
.h-lg { font-size: clamp(30px, 5.2vw, 46px); font-weight: 600; letter-spacing: -0.025em; line-height: 1.05; margin: 0 0 22px; max-width: 18ch; }
.h-md { font-size: clamp(22px, 3.4vw, 30px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.12; margin: 0 0 14px; }
.body-lg { font-size: clamp(17px, 2.2vw, 19px); font-weight: 300; color: var(--ink-soft); margin: 0; max-width: 52ch; line-height: 1.6; }
.lede { font-size: clamp(18px, 2.4vw, 22px); font-weight: 300; color: var(--ink-soft); line-height: 1.5; max-width: 46ch; }
.muted { color: var(--muted); }
.h-xl, .h-lg, .h-md { text-wrap: balance; }
.body-lg, .lede { text-wrap: pretty; }

/* ---------- reveals ---------- */
.reveal { opacity: 0; transform: translateY(12px); animation: rise 1.05s var(--ease-out) forwards; }
.reveal.d1 { animation-delay: 0.08s; }
.reveal.d2 { animation-delay: 0.20s; }
.reveal.d3 { animation-delay: 0.34s; }
.reveal.d4 { animation-delay: 0.48s; }
@keyframes rise { to { opacity: 1; transform: none; } }
.obs { opacity: 0; transform: translateY(18px); filter: blur(6px); transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out), filter 0.8s var(--ease-out); }
.obs.in { opacity: 1; transform: none; filter: blur(0); }
.obs.stagger > * { opacity: 0; transform: translateY(16px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); transition-delay: calc(var(--i, 0) * 90ms); }
.obs.stagger.in > * { opacity: 1; transform: none; }

/* ---------- buttons ---------- */
.cta-primary { position: relative; appearance: none; border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 9px; font-family: inherit; font-size: 15px; font-weight: 600; letter-spacing: 0.01em; color: #1A120B; background: linear-gradient(100deg, var(--heat-core), var(--heat-amber) 52%, var(--heat-ember)); border-radius: 999px; padding: 15px 30px; box-shadow: 0 10px 30px -10px rgba(206,78,34,0.55), inset 0 1px 0 rgba(255,255,255,0.35); transition: transform 0.25s var(--ease-spring), box-shadow 0.25s var(--ease-out), filter 0.2s var(--ease-out); overflow: hidden; text-decoration: none; }
.cta-primary::after { content: ""; position: absolute; inset: 0; background: linear-gradient(105deg, transparent 30%, rgba(255,255,255,0.5) 48%, transparent 62%); transform: translateX(-130%); transition: transform 0.7s var(--ease-out); }
.cta-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 44px -12px rgba(206,78,34,0.7), inset 0 1px 0 rgba(255,255,255,0.45); filter: brightness(1.03); }
.cta-primary:hover::after { transform: translateX(130%); }
.cta-primary:active { transform: translateY(0); }
.cta-primary:focus-visible { outline: none; box-shadow: var(--ring), 0 10px 30px -10px rgba(206,78,34,0.55); }
.cta-ghost { appearance: none; cursor: pointer; font-family: inherit; font-size: 14px; font-weight: 600; letter-spacing: 0.01em; color: var(--ink-soft); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 15px 22px; backdrop-filter: blur(8px); transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out), transform 0.2s var(--ease-spring); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.cta-ghost:hover { border-color: var(--heat-amber); color: var(--ink); transform: translateY(-2px); }
.cta-ghost:focus-visible { outline: none; box-shadow: var(--ring); }
.btn-ghost { appearance: none; font-family: inherit; font-size: 13px; font-weight: 600; letter-spacing: 0.02em; cursor: pointer; color: var(--ink); background: color-mix(in srgb, var(--surface) 70%, transparent); border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; backdrop-filter: blur(8px); transition: border-color 0.2s var(--ease), transform 0.2s var(--ease); text-decoration: none; }
.btn-ghost:hover { border-color: var(--heat-amber); transform: translateY(-1px); }
.btn-download { appearance: none; cursor: pointer; font-family: inherit; font-size: 13px; font-weight: 600; color: #FFF7EE; background: linear-gradient(100deg, var(--heat-amber), var(--heat-ember)); border: none; border-radius: 999px; padding: 10px 18px; transition: filter 0.18s var(--ease); text-decoration: none; display: inline-flex; align-items: center; gap: 7px; }
.btn-download:hover { filter: brightness(1.05); }

/* ---------- theme toggle ---------- */
.theme-toggle { position: fixed; top: 18px; right: 20px; z-index: 60; width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: color-mix(in srgb, var(--surface) 70%, transparent); border: 1px solid var(--line); cursor: pointer; color: var(--ink); backdrop-filter: blur(8px); transition: border-color 0.2s var(--ease), transform 0.2s var(--ease); }
.theme-toggle:hover { transform: translateY(-1px); border-color: var(--heat-amber); }
.theme-toggle:focus-visible { outline: 2px solid var(--heat-amber); outline-offset: 3px; }
.theme-toggle svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }

/* ---------- the logo mark ---------- */
.tm-logo { display: block; }
.tm-logo .crescent { fill: var(--ink); }
.tm-logo .spark { fill: var(--heat-ember); }

/* ---------- site nav ---------- */
.site-nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent); }
.nav-inner { max-width: var(--maxw-wide); margin: 0 auto; padding: 13px 28px; display: flex; align-items: center; gap: 18px; }
.nav-logo { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.nav-logo svg { width: 24px; height: 24px; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav-links a { text-decoration: none; color: var(--ink-soft); font-size: 14px; font-weight: 500; padding: 8px 13px; border-radius: 999px; transition: color 0.2s var(--ease), background 0.2s var(--ease); }
.nav-links a:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 5%, transparent); }
.nav-links a.is-current { color: var(--heat-amber); }
.nav-links a.nav-cta { margin-left: 8px; color: #1A120B; background: linear-gradient(100deg, var(--heat-amber), var(--heat-ember)); font-weight: 600; padding: 9px 17px; box-shadow: 0 8px 22px -12px rgba(206,78,34,0.6); }
.nav-links a.nav-cta:hover { filter: brightness(1.05); color: #1A120B; background: linear-gradient(100deg, var(--heat-amber), var(--heat-ember)); transform: translateY(-1px); }
.nav-inner .theme-toggle { position: static; top: auto; right: auto; flex: none; width: 38px; height: 38px; }
.nav-inner .theme-toggle svg { width: 17px; height: 17px; }
.nav-toggle { display: none; width: 40px; height: 36px; border-radius: 10px; background: transparent; border: 1px solid var(--line); cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { width: 17px; height: 1.5px; background: var(--ink); border-radius: 2px; transition: transform 0.25s var(--ease), opacity 0.2s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-inner .theme-toggle { margin-left: auto; }
  .nav-links { position: fixed; inset: 56px 0 auto 0; margin: 0; flex-direction: column; align-items: stretch; gap: 2px; padding: 14px 20px 22px; background: color-mix(in srgb, var(--bg) 96%, transparent); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); transform: translateY(-12px); opacity: 0; pointer-events: none; transition: transform 0.28s var(--ease), opacity 0.28s var(--ease); }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 13px 14px; font-size: 16px; border-radius: 12px; }
  .nav-links a.nav-cta { margin: 8px 0 0; justify-content: center; display: flex; }
}

/* ---------- site footer ---------- */
.site-footer { margin-top: 96px; border-top: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 40%, transparent); }
.foot-inner { max-width: var(--maxw-wide); margin: 0 auto; padding: 42px 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 18px 32px; }
.foot-brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: 15px; }
.foot-brand svg { width: 22px; height: 22px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.foot-links a { text-decoration: none; color: var(--muted); font-size: 14px; transition: color 0.2s var(--ease); }
.foot-links a:hover { color: var(--heat-amber); }
.foot-note { flex-basis: 100%; margin: 6px 0 0; font-size: 13px; color: var(--muted); }

/* ---------- page hero band ---------- */
.page-hero { padding: clamp(72px, 13vh, 132px) 0 clamp(40px, 7vh, 72px); position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; top: -30%; right: -10%; width: min(60vw, 620px); height: 620px; background: radial-gradient(closest-side, color-mix(in srgb, var(--heat-amber) 16%, transparent), transparent 72%); pointer-events: none; z-index: 0; }
.page-hero .col { position: relative; z-index: 1; }

/* ---------- reusable page components ---------- */
.section { padding: clamp(48px, 9vh, 92px) 0; }
.section.tight { padding: clamp(32px, 6vh, 56px) 0; }
.divider { height: 1px; background: var(--line); border: none; margin: 0; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 24px 26px; position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(120% 90% at 0% 0%, color-mix(in srgb, var(--heat-amber) 9%, transparent), transparent 58%); pointer-events: none; }
.card > * { position: relative; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card-grid.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.tag { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.pill { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 500; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px; }
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--heat-amber); }
.swatch { height: 5px; border-radius: 999px; background: linear-gradient(90deg, var(--heat-amber), var(--heat-ember)); }
.heat-bar { height: 4px; border-radius: 3px; background: var(--cool-wash); overflow: hidden; }
.heat-bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--heat-amber), var(--heat-ember)); }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--surface); color: var(--ink); padding: 10px 16px; border-radius: 10px; z-index: 200; }
.skip-link:focus { left: 12px; top: 12px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .obs, .obs.stagger > * { animation: none !important; opacity: 1 !important; transform: none !important; filter: none !important; transition: none !important; }
  .cta-primary::after { display: none; }
}