/* Terrynn Institute — shared stylesheet
   One quiet system across the homepage and the standalone landing pages.
   Full light + dark via prefers-color-scheme and an explicit data-theme override. */

:root {
  --paper:      #f4f2ea;   /* warm off-white */
  --paper-2:    #ece9df;   /* raised surface */
  --paper-3:    #e4e0d3;   /* deeper surface */
  --ink:        #15201d;   /* near-black, green cast */
  --ink-2:      #39443f;
  --muted:      #6a716c;
  --line:       #d8d3c6;
  --line-2:     #c8c2b2;
  --accent:     #0f6e5e;   /* oxidized teal */
  --accent-2:   #148a78;
  --accent-ink: #0b5447;
  --accent-soft:#e0ebe7;
  --glow:       rgba(15,110,94,0.10);

  --display: "Spectral", Georgia, "Times New Roman", serif;
  --body:    "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1080px;
  --prose: 70ch;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:      #0b0f0e;
    --paper-2:    #111816;
    --paper-3:    #16201d;
    --ink:        #e9ebe5;
    --ink-2:      #c0c7c1;
    --muted:      #889089;
    --line:       #212b28;
    --line-2:     #2c3733;
    --accent:     #59c8b5;
    --accent-2:   #74d6c5;
    --accent-ink: #9fe3d6;
    --accent-soft:#122a26;
    --glow:       rgba(89,200,181,0.12);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper:#0b0f0e; --paper-2:#111816; --paper-3:#16201d;
  --ink:#e9ebe5; --ink-2:#c0c7c1; --muted:#889089;
  --line:#212b28; --line-2:#2c3733;
  --accent:#59c8b5; --accent-2:#74d6c5; --accent-ink:#9fe3d6;
  --accent-soft:#122a26; --glow:rgba(89,200,181,0.12);
  color-scheme: dark;
}

/* Per-page accent swaps for the standalone landing pages. */
[data-accent="electric"] { --accent:#0b7d97; --accent-2:#12a0bf; --accent-ink:#095f72; --accent-soft:#dcedf1; --glow:rgba(11,125,151,0.12); }
[data-accent="electric"][data-theme="dark"],
[data-accent="electric"]:not([data-theme="light"]) { }
@media (prefers-color-scheme: dark) {
  [data-accent="electric"]:not([data-theme="light"]) { --accent:#4cc6e2; --accent-2:#6fd6ef; --accent-ink:#a4e5f4; --accent-soft:#0f2a31; --glow:rgba(76,198,226,0.14); }
}
[data-accent="amber"] { --accent:#9a6a12; --accent-2:#b9861f; --accent-ink:#7c5409; --accent-soft:#f0e7d3; --glow:rgba(154,106,18,0.12); }
@media (prefers-color-scheme: dark) {
  [data-accent="amber"]:not([data-theme="light"]) { --accent:#e0b057; --accent-2:#edc374; --accent-ink:#f2d49a; --accent-soft:#2a2113; --glow:rgba(224,176,87,0.14); }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: var(--accent); color: var(--paper); }

a { color: var(--accent-ink); text-decoration: none; }
a:hover { color: var(--accent-2); }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}

/* ---------- Masthead ---------- */
header.site { position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.masthead { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 15px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.monogram {
  width: 34px; height: 34px; display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: 7px;
  font-family: var(--display); font-weight: 600; font-size: 0.92rem; letter-spacing: 0.02em;
  color: var(--accent-ink); background: var(--accent-soft);
}
.brand .name { font-family: var(--display); font-weight: 600; font-size: 1.12rem; letter-spacing: 0.01em; color: var(--ink); }
.brand .name .dot { color: var(--accent); }
.masthead .meta { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.masthead .back { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.masthead .back:hover { color: var(--accent-2); }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(64px, 12vw, 128px) clamp(48px, 8vw, 88px); border-bottom: 1px solid var(--line); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -20% auto -20%; height: 120%;
  background: radial-gradient(60% 60% at 30% 20%, var(--glow), transparent 70%);
  pointer-events: none;
}
.eyebrow { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent-ink); margin: 0 0 24px; display: flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--accent); display: inline-block; }
h1 { font-family: var(--display); font-weight: 500; font-size: clamp(2.5rem, 7.2vw, 4.4rem); line-height: 1.04; letter-spacing: -0.02em; text-wrap: balance; margin: 0 0 26px; max-width: 18ch; }
.lede { font-size: clamp(1.1rem, 2.4vw, 1.3rem); color: var(--ink-2); max-width: 58ch; margin: 0; }
.lede strong { color: var(--ink); font-weight: 600; }
.hero-actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 14px; }

.btn { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 13px 20px; border-radius: 6px; border: 1px solid transparent; transition: transform .2s var(--ease), background .2s, color .2s, border-color .2s; display: inline-flex; align-items: center; gap: 8px; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--paper); }
.btn-primary:hover { background: var(--accent-2); color: var(--paper); }
.btn-ghost { border-color: var(--line-2); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-ink); }

/* ---------- Sections ---------- */
section { padding-block: clamp(48px, 7vw, 84px); border-bottom: 1px solid var(--line); }
.kicker { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin: 0 0 34px; display: flex; align-items: center; gap: 14px; }
.kicker::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.section-lead { font-family: var(--display); font-weight: 500; font-size: clamp(1.5rem, 3.4vw, 2.1rem); line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 14px; max-width: 24ch; }
.section-sub { color: var(--muted); max-width: var(--prose); margin: 0 0 40px; }

/* ---------- Program cards ---------- */
.programs { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.card { position: relative; border: 1px solid var(--line); border-radius: 12px; padding: 30px 28px; background: var(--paper-2); transition: transform .25s var(--ease), border-color .25s, box-shadow .25s; overflow: hidden; }
.card::after { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, var(--accent), transparent); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.card:hover { transform: translateY(-3px); border-color: var(--line-2); box-shadow: 0 18px 40px -24px var(--glow); }
.card:hover::after { transform: scaleX(1); }
.card .role { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-ink); }
.card h2 { font-family: var(--display); font-weight: 600; font-size: 1.55rem; letter-spacing: -0.01em; margin: 10px 0 0; }
.card p { margin: 12px 0 0; color: var(--ink-2); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tag { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.02em; color: var(--accent-ink); background: var(--accent-soft); border: 1px solid var(--line); border-radius: 100px; padding: 5px 11px; }

/* ---------- Capability list ---------- */
.caps { display: grid; gap: 0; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); column-gap: 48px; }
.cap { display: grid; grid-template-columns: 2.6rem 1fr; gap: 18px; padding-block: 22px; align-items: start; border-top: 1px solid var(--line); }
.cap .num { font-family: var(--mono); font-size: 0.82rem; color: var(--accent); padding-top: 4px; }
.cap h3 { font-family: var(--body); font-weight: 600; font-size: 1.05rem; margin: 0 0 5px; }
.cap p { margin: 0; color: var(--muted); font-size: 0.97rem; max-width: 46ch; }

/* ---------- Steps (landing pages) ---------- */
.steps { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.step { border: 1px solid var(--line); border-radius: 12px; padding: 26px 24px; background: var(--paper-2); }
.step .num { font-family: var(--mono); font-size: 0.78rem; color: var(--accent); letter-spacing: 0.08em; }
.step h3 { font-family: var(--display); font-weight: 600; font-size: 1.22rem; margin: 10px 0 8px; letter-spacing: -0.01em; }
.step p { margin: 0; color: var(--ink-2); font-size: 0.98rem; }

/* ---------- Big statement rows ---------- */
.claims { display: grid; gap: 0; }
.claim { padding-block: 30px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 3rem 1fr; gap: 20px; }
.claim .mk { font-family: var(--mono); color: var(--accent); font-size: 0.85rem; padding-top: 10px; }
.claim h3 { font-family: var(--display); font-weight: 500; font-size: clamp(1.4rem, 3vw, 1.9rem); line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 8px; max-width: 22ch; }
.claim p { margin: 0; color: var(--muted); max-width: 52ch; }

/* ---------- Contact ---------- */
.contact p.intro { max-width: 54ch; color: var(--ink-2); margin: 0 0 24px; font-size: 1.05rem; }
.addr { font-family: var(--mono); font-size: 0.98rem; color: var(--ink); background: var(--paper-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 14px 18px; display: inline-block; user-select: all; }
.addr:hover { color: var(--accent-ink); border-color: var(--accent); }

/* ---------- Footer ---------- */
footer.site { padding-block: 34px 48px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--muted); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer.site .sep { color: var(--line-2); }

/* ---------- Entrance motion ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover { transform: none; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .masthead .meta { display: none; }
  .cap { grid-template-columns: 2rem 1fr; gap: 12px; }
  .claim { grid-template-columns: 2rem 1fr; gap: 12px; }
}