/* Theoria home page. Builds on the tokens and type in shell.css. */
/* The window scrolls (not the body), so mobile browser bars collapse and anchors work. */
html:has(body.home), body.home { height: auto; }
body.home {
  overflow: auto;
  background:
    radial-gradient(1200px 600px at 75% -10%, rgba(80, 120, 170, .16), transparent 60%),
    radial-gradient(900px 500px at 0% 30%, rgba(160, 120, 200, .07), transparent 60%),
    var(--bg);
  background-attachment: fixed;
}
.home main { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

.home-top {
  max-width: 1180px; margin: 0 auto; padding: max(24px, env(safe-area-inset-top)) 32px 0;
  display: flex; align-items: center; justify-content: space-between;
}
.home-about { color: var(--ink-3); text-decoration: none; font-size: 14px; }
.home-about:hover { color: var(--ink); }

.hero { padding: 96px 0 56px; max-width: 720px; }
.hero h1 { font-size: clamp(40px, 6.5vw, 76px); font-weight: 350; letter-spacing: -.045em; line-height: 1.02; margin: 16px 0 20px; }
.hero p { font-size: clamp(16px, 1.6vw, 19px); color: var(--ink-2); line-height: 1.6; margin: 0; max-width: 600px; }

.concepts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.concept {
  display: flex; flex-direction: column; border-radius: 18px; overflow: hidden;
  background: rgba(13, 20, 32, .6); border: 1px solid var(--glass-border);
  color: inherit; text-decoration: none;
  transition: border-color .25s, transform .25s, background .25s;
}
.concept.live:first-child { grid-column: 1 / -1; flex-direction: row; }
.concept.live:first-child figure { flex: 1.25; }
.concept.live:first-child .concept-text { flex: 1; align-self: center; }
.concept.live:hover { border-color: rgba(169, 223, 238, .45); transform: translateY(-2px); background: rgba(16, 25, 40, .75); }
.concept figure { margin: 0; background: rgba(0, 0, 0, .22); aspect-ratio: 16 / 9; display: grid; place-items: center; }
.concept figure svg { width: 100%; height: 100%; display: block; }
.concept.soon figure { opacity: .55; }
.concept-text { padding: 22px 26px 26px; }
.concept h2 { font-size: 24px; font-weight: 450; letter-spacing: -.025em; margin: 8px 0 8px; }
.concept.live:first-child h2 { font-size: 32px; }
.concept p { margin: 0; color: var(--ink-2); font-size: 15px; line-height: 1.6; }
.concept.soon p { color: var(--ink-3); }
.status { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-4); }
.concept.live .status { color: var(--accent); }
.go {
  display: inline-flex; gap: 8px; margin-top: 20px; padding: 10px 20px; border-radius: 999px;
  background: #e6f2f7; color: #08111b; font-weight: 550; font-size: 14px;
}
.concept.live:hover .go { background: #fff; }

.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding: 88px 0 40px; border-bottom: 1px solid var(--line); }
.principles h3 { font-size: 16px; font-weight: 550; margin: 0 0 8px; }
.principles p { margin: 0; color: var(--ink-3); font-size: 14.5px; line-height: 1.6; }

.home-foot {
  max-width: 1180px; margin: 0 auto; padding: 24px 32px max(32px, env(safe-area-inset-bottom));
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--ink-4);
}
.home-foot a { color: var(--ink-3); text-underline-offset: 3px; }

@media (max-width: 820px) {
  .concepts { grid-template-columns: 1fr; }
  .concept.live:first-child { flex-direction: column; }
  .principles { grid-template-columns: 1fr; gap: 22px; padding-top: 56px; }
}
@media (max-width: 720px) {
  .home main, .home-top, .home-foot { padding-left: 16px; padding-right: 16px; }
  .hero { padding: 56px 0 36px; }
  .concept-text { padding: 18px 20px 22px; }
  .concept.live:first-child h2 { font-size: 26px; }
}

/* ================================================================ Home page on paper (risograph theme) */
body.home.riso { background: var(--paper); background-attachment: initial; }
.riso .wordmark b { color: var(--olive-dark); }
.riso .home-about { color: var(--ink-2); font-family: var(--mono); font-size: 13px; }
.riso .home-about:hover { color: var(--spot); }
.riso .hero .eyebrow { color: var(--spot); }
.riso .hero h1 { font-family: var(--mono); font-weight: 700; letter-spacing: -.04em; color: var(--olive-dark); }
.riso .hero p { color: var(--ink-2); }
.riso .concept { background: var(--paper-2); border: 2px solid var(--olive); border-radius: 0; }
.riso .concept.live:hover { border-color: var(--spot); background: #fbf6ea; transform: translateY(-2px); }
.riso .concept figure { background: var(--paper); border-bottom: 2px solid var(--olive); }
.riso .concept.live:first-child figure { border-bottom: 0; border-right: 2px solid var(--olive); }
.riso .concept h2 { font-family: var(--mono); font-weight: 700; letter-spacing: -.02em; color: var(--olive-dark); }
.riso .concept p { color: var(--ink-2); }
.riso .concept.live .status, .riso .status { color: var(--spot); font-family: var(--mono); letter-spacing: .1em; }
.riso .go { background: var(--olive); color: var(--paper-2); border-radius: 0; font-family: var(--mono); font-weight: 400; }
.riso .concept.live:hover .go { background: var(--spot); }
.riso .principles { border-bottom: 2px solid var(--olive); }
.riso .principles h3 { font-family: var(--mono); color: var(--olive-dark); }
.riso .principles p { color: var(--ink-3); }
.riso .home-foot { color: var(--ink-3); font-family: var(--mono); font-size: 12px; }
.riso .home-foot a { color: var(--olive-dark); }
@media (max-width: 820px) { .riso .concept.live:first-child figure { border-right: 0; border-bottom: 2px solid var(--olive); } }
/* The last concept spans the row too (like the first), so the grid ends evenly. */
.concept.live:last-child { grid-column: 1 / -1; flex-direction: row; }
.concept.live:last-child figure { flex: 1.25; }
.concept.live:last-child .concept-text { flex: 1; align-self: center; }
.riso .concept.live:last-child figure { border-bottom: 0; border-right: 2px solid var(--olive); }
@media (max-width: 820px) {
  .concept.live:last-child { flex-direction: column; }
  .riso .concept.live:last-child figure { border-right: 0; border-bottom: 2px solid var(--olive); }
}