/* =====================================================================
   SESHU — design system
   Black and gold, Kemetic-inspired. Mobile-first. No external requests.
   ===================================================================== */

/* ---------- fonts (self-hosted, SIL Open Font License) ---------- */
@font-face { font-family: "Cinzel"; font-weight: 400; font-display: swap; src: url("../fonts/cinzel-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Cinzel"; font-weight: 600; font-display: swap; src: url("../fonts/cinzel-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Cinzel"; font-weight: 700; font-display: swap; src: url("../fonts/cinzel-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Jost"; font-weight: 300; font-display: swap; src: url("../fonts/jost-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: "Jost"; font-weight: 400; font-display: swap; src: url("../fonts/jost-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Jost"; font-weight: 500; font-display: swap; src: url("../fonts/jost-latin-500-normal.woff2") format("woff2"); }

/* ---------- tokens ---------- */
:root {
  --font-display: "Cinzel", "Trajan Pro", Georgia, serif;
  --font-ui: "Jost", "Avenir Next", "Segoe UI", system-ui, sans-serif;

  /* dark (brand default) */
  --bg: #050403;
  --bg-raise: #0d0a06;
  --field: rgba(9, 7, 4, .78);
  --text: #e2d6ba;
  --text-soft: #a99a7a;
  --gold: #c9a24e;
  --gold-hi: #f1d690;
  --gold-lo: #7a5a22;
  --line: rgba(201, 162, 78, .62);
  --line-soft: rgba(201, 162, 78, .2);
  --glow: rgba(242, 196, 98, .32);
  --deco: #c9a24e;
  --disk-op: .2;
  --panel-op: .15;
  --grain-op: .07;
  --vignette: rgba(0, 0, 0, .78);
  --link: #f0cf7e;
  --link-visited: #c9a6d9;
  --dust: 242, 206, 128;

  --radius-pill: 999px;
  --radius-card: 18px;
  --ease: cubic-bezier(.2, .7, .2, 1);

  color-scheme: dark;
}

/* light: papyrus and bronze */
:root[data-theme="light"] {
  --bg: #efe6d2;
  --bg-raise: #f7f0e1;
  --field: rgba(251, 246, 235, .9);
  --text: #2b2116;
  --text-soft: #6a5a40;
  --gold: #8f6a24;
  --gold-hi: #6f4f15;
  --gold-lo: #b38b45;
  --line: rgba(122, 88, 30, .55);
  --line-soft: rgba(122, 88, 30, .22);
  --glow: rgba(176, 124, 36, .22);
  --deco: #8a6626;
  --disk-op: .22;
  --panel-op: .18;
  --grain-op: .05;
  --vignette: rgba(120, 90, 40, .18);
  --link: #6b4710;
  --link-visited: #6a3f7a;
  --dust: 150, 105, 35;
  color-scheme: light;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #efe6d2; --bg-raise: #f7f0e1; --field: rgba(251, 246, 235, .9);
    --text: #2b2116; --text-soft: #6a5a40; --gold: #8f6a24; --gold-hi: #6f4f15; --gold-lo: #b38b45;
    --line: rgba(122, 88, 30, .55); --line-soft: rgba(122, 88, 30, .22); --glow: rgba(176, 124, 36, .22);
    --deco: #8a6626; --disk-op: .22; --panel-op: .18; --grain-op: .05; --vignette: rgba(120, 90, 40, .18);
    --link: #6b4710; --link-visited: #6a3f7a; --dust: 150, 105, 35;
    color-scheme: light;
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.55 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}
img, svg { display: block; max-width: 100%; }
a { color: var(--link); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--gold-hi); }
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--gold-hi); outline-offset: 3px; border-radius: 4px; }
code { font-size: .92em; color: var(--gold-hi); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 50;
  padding: .6rem 1rem; border-radius: var(--radius-pill);
  background: var(--bg-raise); color: var(--gold-hi); border: 1px solid var(--line);
}
.skip-link:focus { top: 1rem; }
.no-js .js-only { display: none !important; }

.icon { width: 1.25em; height: 1.25em; flex: none; }

/* ---------- backdrop ---------- */
.stage {
  position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
  background: radial-gradient(ellipse 70% 55% at 50% 38%, transparent 30%, var(--vignette) 100%), var(--bg);
}
.stage__grain {
  position: absolute; inset: 0; opacity: var(--grain-op); mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.stage__panel { display: none; }
.stage__horizon {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: clamp(170px, 31vh, 380px);
}
.horizon { width: 100%; height: 100%; object-fit: cover; object-position: 50% 100%; }
.horizon--light { display: none; }
:root[data-theme="light"] .horizon--dark { display: none; }
:root[data-theme="light"] .horizon--light { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .horizon--dark { display: none; }
  :root:not([data-theme]) .horizon--light { display: block; }
}
.stage__dust { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage--quiet { background: radial-gradient(ellipse 80% 40% at 50% 0%, var(--line-soft), transparent 70%), var(--bg); }

@media (min-width: 960px) {
  .stage__panel {
    display: block; position: absolute; top: 0; bottom: 0;
    width: clamp(110px, 10vw, 180px);
    background: var(--deco); opacity: var(--panel-op);
    -webkit-mask: url("../img/glyph-panel.svg") top center / 100% auto repeat-y, linear-gradient(#000 55%, transparent 88%);
    -webkit-mask-composite: source-in;
            mask: url("../img/glyph-panel.svg") top center / 100% auto repeat-y, linear-gradient(#000 55%, transparent 88%);
            mask-composite: intersect;
  }
  .stage__panel--l { left: clamp(8px, 1.4vw, 24px); }
  .stage__panel--r { right: clamp(8px, 1.4vw, 24px); transform: scaleX(-1); }
}

/* ---------- buttons ---------- */
.btn {
  --hx: 50%;
  display: inline-flex; align-items: center; justify-content: center; gap: .65rem;
  min-height: 3.25rem; padding: 0 1.6rem;
  border: 1px solid var(--line); border-radius: var(--radius-pill);
  background: radial-gradient(120% 160% at var(--hx) 120%, var(--line-soft), transparent 60%), var(--field);
  color: var(--text); font-size: 1.05rem; letter-spacing: .01em; text-decoration: none;
  cursor: pointer;
  transition: border-color .25s var(--ease), color .25s var(--ease), box-shadow .3s var(--ease), background-color .25s;
}
.btn .icon { color: var(--gold); transition: color .25s; }
.btn:hover { border-color: var(--gold); color: var(--gold-hi); box-shadow: 0 0 0 1px var(--line-soft), 0 0 26px -6px var(--glow); }
.btn:hover .icon { color: var(--gold-hi); }
.btn:active { transform: translateY(1px); }
.btn--small { min-height: 2.6rem; padding: 0 1.1rem; font-size: .95rem; }
.btn--quiet { border-color: var(--line-soft); background: transparent; }

.link-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  color: var(--text-soft); text-decoration: none; font-size: .95rem;
  padding: .35rem .25rem;
}
.link-btn:hover { color: var(--gold-hi); }
.link-btn .icon { width: 1.1em; height: 1.1em; }

.tool {
  display: inline-grid; place-items: center;
  width: 2.75rem; height: 2.75rem; padding: 0;
  border: 1px solid transparent; border-radius: 50%; background: transparent;
  color: var(--text-soft); cursor: pointer; text-decoration: none;
  transition: color .2s, border-color .2s, box-shadow .25s;
}
.tool:hover { color: var(--gold-hi); border-color: var(--line-soft); box-shadow: 0 0 18px -6px var(--glow); }

/* ---------- search field ---------- */
.search {
  position: relative; display: flex; align-items: center;
  width: 100%;
  border: 1.5px solid var(--line); border-radius: var(--radius-pill);
  background: var(--field);
  box-shadow: inset 0 1px 0 rgba(255, 230, 170, .05), 0 12px 40px -18px rgba(0, 0, 0, .9);
  transition: border-color .25s var(--ease), box-shadow .35s var(--ease);
}
.search:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--line-soft), 0 0 34px -8px var(--glow), inset 0 1px 0 rgba(255, 230, 170, .08);
}
.search__lead { display: grid; place-items: center; padding-left: 1rem; color: var(--text-soft); }
.search__lead .icon { width: 1.4rem; height: 1.4rem; }
.search__input {
  flex: 1; min-width: 0; height: 3.6rem; padding: 0 .65rem;
  border: 0; outline: 0; background: transparent;
  font-size: 1.02rem; color: var(--text);
}
.search__input::placeholder { color: var(--text-soft); opacity: .85; }
.search__input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
.search__divider { display: none; width: 1px; align-self: stretch; margin: .9rem 0; background: var(--line-soft); }
.search__go {
  display: grid; place-items: center; flex: none;
  width: 3.6rem; height: 3.6rem; margin-right: .2rem;
  border: 0; border-radius: 50%; background: transparent;
  color: var(--gold); cursor: pointer; transition: color .2s, filter .25s;
}
.search__go .icon { width: 1.65rem; height: 1.65rem; stroke-width: 1.7; }
.search__go:hover { color: var(--gold-hi); filter: drop-shadow(0 0 6px var(--glow)); }
.search__go:focus-visible { outline-offset: -4px; border-radius: 50%; }
.search.is-empty { animation: nudge .35s var(--ease); }
@keyframes nudge { 30% { transform: translateX(-5px); } 65% { transform: translateX(4px); } }

/* ---------- homepage ---------- */
.home {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 100%; max-width: 1060px; margin: 0 auto;
  padding: clamp(5.5rem, 16vh, 9rem) 1.1rem 3rem;
  text-align: center;
}
.home__brand { position: relative; margin: 0; width: min(88vw, 760px); }
/* winged solar disk behind the wordmark */
.home__brand::before {
  content: ""; position: absolute; z-index: -1;
  left: 50%; bottom: 46%;
  width: 165%; aspect-ratio: 1400 / 440; transform: translateX(-50%);
  background: var(--deco); opacity: var(--disk-op);
  -webkit-mask: url("../img/winged-disk.svg") center / contain no-repeat;
          mask: url("../img/winged-disk.svg") center / contain no-repeat;
}
.wordmark { width: 100%; height: auto; overflow: visible; }
.wordmark__letters { font-family: var(--font-display); }
.wordmark__flare, .wordmark__core { mix-blend-mode: screen; }
:root[data-theme="light"] .wordmark__flare { opacity: .55; }

.tagline {
  display: flex; align-items: center; justify-content: center; gap: .9rem;
  margin: clamp(.9rem, 2.4vw, 1.6rem) 0 clamp(2rem, 5vh, 3rem);
  color: var(--gold);
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(.62rem, 2.6vw, 1.12rem); letter-spacing: .38em; text-transform: uppercase;
}
.tagline__text { margin-right: -.38em; } /* optically centre tracked text */
.tagline__ankh { width: 1.5em; height: 1.5em; stroke-width: 1.4; display: none; }
.tagline__rule { display: none; width: clamp(2rem, 6vw, 4.5rem); height: 1px; background: currentColor; opacity: .7; }

.search--hero { max-width: 800px; }
.home__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .9rem 1.2rem; margin-top: clamp(1.5rem, 4vh, 2.3rem); }

/* curated discovery card */
.curious {
  width: 100%; max-width: 560px; margin-top: 2rem; padding: 1.4rem 1.6rem 1.1rem;
  border: 1px solid var(--line-soft); border-radius: var(--radius-card);
  background: var(--field); text-align: left;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.curious[hidden] { display: none; }
.curious__title { margin: 0 0 .4rem; font: 600 1.3rem/1.25 var(--font-display); color: var(--gold-hi); letter-spacing: .02em; }
.curious__blurb { margin: 0 0 1rem; color: var(--text); max-width: 60ch; }
.curious__actions { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1.1rem; }
.curious.is-fresh { animation: settle .45s var(--ease); }
@keyframes settle { from { opacity: 0; transform: translateY(6px); } }

/* one orchestrated moment: the glyph ignites */
@media (prefers-reduced-motion: no-preference) {
  .page--home .wordmark__flare, .page--home .wordmark__core { animation: ignite 2.2s .35s var(--ease) both; }
  .page--home .home__brand::before { animation: rise 2.4s var(--ease) both; }
  .page--home .wordmark__flare { animation: ignite 2.2s .35s var(--ease) both, breathe 6s 2.6s ease-in-out infinite; }
}
@keyframes ignite { 0% { opacity: 0; transform: scaleX(.2); } 60% { opacity: 1; } 100% { opacity: 1; transform: none; } }
@keyframes breathe { 50% { opacity: .72; } }
@keyframes rise { from { opacity: 0; } }
.wordmark__flare, .wordmark__core { transform-box: fill-box; transform-origin: center; }

/* ---------- footer bar ---------- */
.bar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .45rem clamp(.8rem, 3vw, 2rem) calc(.45rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line-soft);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  font-size: .9rem; color: var(--text-soft);
}
.bar__note { display: flex; align-items: center; gap: .55rem; margin: 0; }
.bar__note .icon { color: var(--text-soft); }
.bar__claim, .bar__long { display: none; }
.bar__tools { display: flex; gap: .2rem; }
.icon--sun { display: none; }
:root[data-theme="light"] .icon--moon { display: none; }
:root[data-theme="light"] .icon--sun { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .icon--moon { display: none; }
  :root:not([data-theme]) .icon--sun { display: block; }
}

/* ---------- settings dialog ---------- */
.settings {
  width: min(92vw, 440px); max-height: 88vh; padding: 0;
  border: 1px solid var(--line); border-radius: var(--radius-card);
  background: var(--bg-raise); color: var(--text);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .9), 0 0 40px -18px var(--glow);
}
.settings::backdrop { background: rgba(0, 0, 0, .6); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); }
.settings__form { padding: 1.1rem 1.4rem 1.4rem; }
.settings__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .4rem; }
.settings__head h2 { margin: 0; font: 600 1.25rem var(--font-display); color: var(--gold-hi); letter-spacing: .04em; }
.settings fieldset { margin: 0; padding: .9rem 0; border: 0; border-top: 1px solid var(--line-soft); }
.settings legend { float: left; width: 100%; padding: 0; margin-bottom: .45rem; font-weight: 500; color: var(--gold); }
.settings legend + * { clear: both; }
.choice { display: flex; align-items: center; gap: .65rem; padding: .3rem 0; cursor: pointer; }
.choice input { width: 1.1rem; height: 1.1rem; accent-color: var(--gold); margin: 0; }
.hint { margin: .3rem 0 0; font-size: .86rem; color: var(--text-soft); }
.settings__actions { display: flex; justify-content: flex-end; gap: .7rem; padding-top: 1rem; border-top: 1px solid var(--line-soft); }

/* ---------- inner pages: top bar ---------- */
.topbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: .9rem 1.6rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line-soft);
}
.topbar__brand { display: block; width: 7.5rem; flex: none; }
.search--compact { flex: 1 1 18rem; max-width: 680px; }
.search--compact .search__input { height: 2.9rem; font-size: 1rem; }
.search--compact .search__go { width: 2.9rem; height: 2.9rem; }
.search--compact .search__go .icon { width: 1.35rem; height: 1.35rem; }
.search--compact .search__lead .icon { width: 1.15rem; height: 1.15rem; }

.tabs { display: flex; gap: 1.4rem; padding: 0 clamp(1rem, 3vw, 2rem); border-bottom: 1px solid var(--line-soft); }
.tabs__tab {
  padding: .7rem .1rem; border-bottom: 2px solid transparent;
  color: var(--text-soft); text-decoration: none; font-size: .95rem;
}
.tabs__tab[aria-current="page"] { color: var(--gold-hi); border-bottom-color: var(--gold); }

.results, .doc {
  flex: 1; width: 100%; max-width: 720px;
  padding: 1.6rem clamp(1rem, 3vw, 2rem) 3rem;
}
@media (min-width: 900px) {
  .results, .doc { margin-left: 9.1rem; } /* align with the search field: brand width + gap */
}
.notice {
  padding: 1.4rem 1.6rem; border: 1px solid var(--line-soft); border-radius: var(--radius-card);
  background: var(--field);
}
.notice__title { margin: 0 0 .5rem; font: 600 1.25rem/1.3 var(--font-display); color: var(--gold-hi); }
.notice p { margin: .4rem 0; }
.notice__q { color: var(--gold-hi); font-weight: 500; overflow-wrap: anywhere; }

.doc h1 { margin: .4rem 0 .8rem; font: 600 clamp(1.8rem, 5vw, 2.4rem)/1.15 var(--font-display); color: var(--gold-hi); letter-spacing: .03em; }
.doc h2 { margin: 2rem 0 .4rem; font: 600 1.15rem/1.3 var(--font-display); color: var(--gold); letter-spacing: .03em; }
.doc p { max-width: 66ch; }
.doc__lead { font-size: 1.12rem; color: var(--text); }
.doc__meta { margin-top: 2.4rem; font-size: .88rem; color: var(--text-soft); }

/* ---------- breakpoints ---------- */
@media (min-width: 560px) {
  .tagline__rule, .tagline__ankh { display: block; }
  .bar__claim, .bar__long { display: inline; }
  .bar__short { display: none; }
  .search__divider { display: block; }
  .search__lead { padding-left: 1.3rem; }
  .search__input { height: 4.25rem; font-size: 1.2rem; padding: 0 1rem; }
  .search__go { width: 4.25rem; height: 4.25rem; }
}
@media (max-width: 380px) {
  .tagline { letter-spacing: .26em; }
  .tagline__text { margin-right: -.26em; }
  .btn { padding: 0 1.2rem; font-size: 1rem; }
}
@media (max-height: 640px) and (orientation: landscape) {
  .home { padding-top: 2.5rem; }
  .stage__horizon { height: 30vh; }
}

/* ---------- motion & contrast preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .stage__dust { display: none; }
}
@media (prefers-contrast: more) {
  :root { --line: var(--gold-hi); --line-soft: var(--gold); --text-soft: var(--text); }
  .stage__panel, .home__brand::before { opacity: .08; }
}
@media (forced-colors: active) {
  .search, .btn, .curious, .notice { border: 1px solid CanvasText; }
}
@media print {
  .stage, .bar, .settings, .tabs { display: none !important; }
  body { background: #fff; color: #000; }
}