/* ============================================================
   tilinthecloud.com  ·  "Three-Body System"
   Clash Display (display) + Switzer (body), self-hosted.
   Ink ground, bone text, one molten copper accent.
   ============================================================ */

/* ---------- Fonts ---------- */
@font-face {
  font-family: "Clash Display";
  src: url("/assets/fonts/clash-display-500.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Clash Display";
  src: url("/assets/fonts/clash-display-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Clash Display";
  src: url("/assets/fonts/clash-display-700.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Switzer";
  src: url("/assets/fonts/switzer-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Switzer";
  src: url("/assets/fonts/switzer-500.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Switzer";
  src: url("/assets/fonts/switzer-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --ink:        #0F1318;   /* page ground            */
  --ink-raised: #141921;   /* cards / raised panels  */
  --ink-line:   #232A34;   /* hairlines              */
  --bone:       #ECE7DB;   /* primary text           */
  --bone-dim:   #9AA0A8;   /* secondary text         */
  --bone-faint: #5E6671;   /* tertiary / labels      */
  --copper:     #CC7A3B;   /* accent                 */
  --copper-lo:  #E0995E;   /* accent hover / light   */
  --copper-glow: rgba(204,122,59,.16);

  --display: "Clash Display", Georgia, serif;
  --body:    "Switzer", "Helvetica Neue", Arial, sans-serif;

  --maxw: 1160px;
  --gut:  clamp(1.25rem, 4vw, 3rem);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }

html { overflow-x: clip; }
body {
  font-family: var(--body);
  font-weight: 400;
  color: var(--bone);
  background: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
/* Long words (e.g. "modernization") never punch through narrow screens */
h1, h2, h3, p, a { overflow-wrap: break-word; }
.hero-grid > *, .contact-grid > *, .writing-card > * { min-width: 0; }

/* Atmospheric ground: layered copper glow + cool top light + fine grain */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(120% 90% at 82% 8%, rgba(58,72,92,.30) 0%, transparent 55%),
    radial-gradient(90% 70% at 12% 96%, var(--copper-glow) 0%, transparent 55%),
    var(--ink);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; opacity: .045; pointer-events: none;
  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'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
section { position: relative; }
.eyebrow {
  font-family: var(--body);
  font-weight: 600;
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--copper);
  display: inline-flex; align-items: center; gap: .6rem;
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 1px; background: var(--copper); opacity: .7;
}

/* ---------- Header ---------- */
.site-head {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--ink) 72%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.site-head.is-stuck { border-bottom-color: var(--ink-line); }
.site-head .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: .65rem; font-family: var(--display); font-weight: 600; letter-spacing: -.01em; font-size: 1.06rem; }
.brand svg { width: 26px; height: 26px; }
.brand b { font-weight: 600; }
.brand .tld { color: var(--bone-faint); font-weight: 500; }
.nav { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2rem); }
.nav a { font-weight: 500; font-size: .95rem; color: var(--bone-dim); transition: color .2s var(--ease); }
.nav a:hover { color: var(--bone); }
.nav .nav-cta {
  color: var(--bone); border: 1px solid var(--ink-line); border-radius: 999px;
  padding: .42rem 1rem; transition: border-color .2s var(--ease), color .2s var(--ease);
}
.nav .nav-cta:hover { border-color: var(--copper); color: var(--copper-lo); }
@media (max-width: 560px) { .nav .nav-plain { display: none; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--body); font-weight: 600; font-size: .98rem;
  padding: .85rem 1.5rem; border-radius: 999px;
  transition: transform .18s var(--ease), background .2s var(--ease),
              border-color .2s var(--ease), color .2s var(--ease);
  will-change: transform;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--copper); color: #1a1206; }
.btn-primary:hover { background: var(--copper-lo); transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--ink-line); color: var(--bone); }
.btn-ghost:hover { border-color: var(--copper); color: var(--copper-lo); transform: translateY(-2px); }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(3.5rem, 9vw, 7rem); padding-bottom: clamp(3.5rem, 8vw, 6.5rem); }
.hero .wrap { position: relative; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.hero-kicker { margin-bottom: 1.6rem; }
.hero h1 {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(2.5rem, 6.4vw, 4.6rem);
  line-height: 1.02; letter-spacing: -.025em;
  margin-bottom: 1.4rem;
}
.hero h1 .accent { color: var(--copper); }
.hero .lede {
  font-size: clamp(1.12rem, 1.7vw, 1.34rem);
  color: var(--bone-dim); max-width: 34ch; line-height: 1.5;
  margin-bottom: 2.2rem;
}
.hero .cta-row { display: flex; flex-wrap: wrap; gap: .9rem; }

/* Orbit visual */
.orbit-stage { position: relative; aspect-ratio: 1; width: 100%; max-width: 440px; justify-self: center; }
.orbit-stage svg { width: 100%; height: 100%; overflow: visible; }
.orbit-ring { fill: none; stroke: var(--ink-line); stroke-width: 1.25; }
.orbit-spin { transform-box: fill-box; transform-origin: center; }
.body-core { fill: var(--copper); filter: drop-shadow(0 0 22px rgba(204,122,59,.55)); }
.body-a { fill: var(--bone); }
.body-b { fill: var(--bone); }
.body-c { fill: var(--copper-lo); }
.orbit-label {
  font-family: var(--body); font-weight: 600; font-size: 9px;
  letter-spacing: .16em; text-transform: uppercase; fill: var(--bone-faint);
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .orbit-stage { grid-row: 1; max-width: 300px; margin-bottom: .5rem; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 2.15rem; }
  .proof-item { font-size: 1.2rem; }
}

/* ---------- Section frame ---------- */
.band { padding-block: clamp(3.5rem, 8vw, 6rem); border-top: 1px solid var(--ink-line); }
.band-head { max-width: 56ch; margin-bottom: clamp(2.2rem, 5vw, 3.4rem); }
.band-head h2 {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.08;
  letter-spacing: -.02em; margin-top: 1.1rem;
}
.band-head p { color: var(--bone-dim); font-size: 1.08rem; margin-top: 1.1rem; max-width: 52ch; }

/* ---------- Three bodies ---------- */
.bodies { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--ink-line); border: 1px solid var(--ink-line); border-radius: 14px; overflow: hidden; }
.body-cell { background: var(--ink-raised); padding: clamp(1.4rem, 2.6vw, 2.1rem); position: relative; transition: background .25s var(--ease); }
.body-cell:hover { background: #181E27; }
.body-cell .idx {
  font-family: var(--display); font-weight: 500; font-size: .95rem;
  color: var(--copper); letter-spacing: .04em;
}
.body-cell .dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; margin-left: .5rem; vertical-align: middle; }
.body-cell h3 { font-family: var(--display); font-weight: 600; font-size: 1.32rem; margin: 1rem 0 .5rem; letter-spacing: -.01em; }
.body-cell p { color: var(--bone-dim); font-size: .98rem; }
.bodies-foot {
  margin-top: 1.6rem; color: var(--bone-dim); font-size: 1.05rem;
  display: flex; gap: .8rem; align-items: baseline; flex-wrap: wrap;
}
.bodies-foot strong { color: var(--bone); font-weight: 600; }
@media (max-width: 720px) { .bodies { grid-template-columns: 1fr; } }

/* ---------- Proof strip ---------- */
.proof { border-top: 1px solid var(--ink-line); border-bottom: 1px solid var(--ink-line); background: var(--ink-raised); }
.proof .wrap { padding-block: clamp(2.2rem, 4vw, 3rem); }
.proof .proof-lead { color: var(--bone-dim); font-size: 1.02rem; margin-bottom: 1.6rem; max-width: 60ch; }
.proof-row { display: flex; flex-wrap: wrap; align-items: center; gap: clamp(1.2rem, 4vw, 2.8rem); }
.proof-item { font-family: var(--display); font-weight: 600; font-size: clamp(1.3rem, 2.6vw, 1.9rem); letter-spacing: -.01em; color: var(--bone); }
.proof-sep { color: var(--bone-faint); font-size: 1.2rem; }
.proof-note { margin-top: 1.4rem; color: var(--bone-faint); font-size: .92rem; }

/* ---------- Writing ---------- */
.writing-card {
  display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center;
  background: var(--ink-raised); border: 1px solid var(--ink-line);
  border-radius: 16px; padding: clamp(1.6rem, 4vw, 2.6rem);
  transition: border-color .25s var(--ease);
}
.writing-card:hover { border-color: color-mix(in srgb, var(--copper) 50%, var(--ink-line)); }
.writing-card .wtitle { font-family: var(--display); font-weight: 600; font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -.01em; }
.writing-card .wsub { color: var(--bone-dim); margin-top: .5rem; max-width: 46ch; }
@media (max-width: 620px) { .writing-card { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.contact-aside h2 { font-family: var(--display); font-weight: 600; font-size: clamp(1.9rem, 3.6vw, 2.8rem); line-height: 1.08; letter-spacing: -.02em; margin-top: 1.1rem; }
.contact-aside p { color: var(--bone-dim); margin-top: 1.1rem; max-width: 42ch; }
.contact-direct { margin-top: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.contact-direct a.line { display: inline-flex; align-items: center; gap: .7rem; color: var(--bone); font-weight: 500; transition: color .2s var(--ease); }
.contact-direct a.line:hover { color: var(--copper-lo); }
.contact-direct .line svg { width: 18px; height: 18px; stroke: var(--copper); }

form.contact-form { display: grid; gap: 1rem; }
.field { display: grid; gap: .45rem; }
.field label { font-size: .8rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--bone-faint); }
.field input, .field textarea {
  font: inherit; color: var(--bone); background: var(--ink-raised);
  border: 1px solid var(--ink-line); border-radius: 10px; padding: .8rem .95rem;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--copper); background: #161C25; }
.field textarea { min-height: 120px; resize: vertical; }
form.contact-form .btn-primary { justify-self: start; margin-top: .3rem; }
.form-note { color: var(--bone-faint); font-size: .85rem; }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.site-foot { border-top: 1px solid var(--ink-line); padding-block: 2.4rem; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: center; justify-content: space-between; }
.site-foot .legal { color: var(--bone-faint); font-size: .9rem; }
.site-foot .legal b { color: var(--bone-dim); font-weight: 600; }
.site-foot .foot-links { display: flex; gap: 1.4rem; font-size: .9rem; }
.site-foot .foot-links a { color: var(--bone-dim); transition: color .2s var(--ease); }
.site-foot .foot-links a:hover { color: var(--copper-lo); }

/* ---------- Accessibility ---------- */
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-radius: 4px; }
.skip-link { position: absolute; left: -9999px; top: .5rem; background: var(--copper); color: #1a1206; padding: .6rem 1rem; border-radius: 8px; font-weight: 600; z-index: 100; }
.skip-link:focus { left: var(--gut); }

/* ---------- Motion: staggered load ---------- */
.reveal { opacity: 0; transform: translateY(18px); }
.is-ready .reveal { animation: rise .9s var(--ease) forwards; }
.is-ready .reveal[data-d="1"] { animation-delay: .05s; }
.is-ready .reveal[data-d="2"] { animation-delay: .14s; }
.is-ready .reveal[data-d="3"] { animation-delay: .23s; }
.is-ready .reveal[data-d="4"] { animation-delay: .32s; }
.is-ready .reveal[data-d="5"] { animation-delay: .42s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* Scroll-in for lower sections */
.inview { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.inview.seen { opacity: 1; transform: none; }

/* Orbit drift */
@keyframes spin { to { transform: rotate(360deg); } }
.orbit-spin.s1 { animation: spin 26s linear infinite; }
.orbit-spin.s2 { animation: spin 38s linear infinite reverse; }
.orbit-spin.s3 { animation: spin 32s linear infinite; }
.body-core { animation: pulse 6s var(--ease) infinite; }
@keyframes pulse { 0%,100% { filter: drop-shadow(0 0 18px rgba(204,122,59,.45)); } 50% { filter: drop-shadow(0 0 30px rgba(204,122,59,.75)); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .inview { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .orbit-spin, .body-core { animation: none !important; }
  .btn:hover, .btn-primary:hover, .btn-ghost:hover { transform: none; }
}