/* SPDX-License-Identifier: AGPL-3.0-only
   Per-section layout. Components stay in components.css; this file only
   arranges them. */

@layer sections {

  /* ---------- hero -------------------------------------------------------- */

  .hero {
    position: relative;
    padding-block: clamp(48px, 8vh, 104px) clamp(48px, 7vw, 96px);
    text-align: center;
    overflow: clip;
  }

  /* One static blurred radial. No animation, no repaint cost, and it gives the
     dark page the depth that a flat background never has. */
  .hero::before {
    content: "";
    position: absolute;
    inset-block-start: -10%;
    inset-inline: -10%;
    height: 620px;
    background: radial-gradient(58% 58% at 50% 0%,
                color-mix(in oklab, var(--accent) 22%, transparent), transparent 70%);
    filter: blur(60px);
    opacity: 0.55;
    pointer-events: none;
    z-index: -1;
  }
  :root[data-theme="light"] .hero::before { opacity: 0.32; }
  @media (prefers-color-scheme: light) {
    :root:not([data-theme]) .hero::before { opacity: 0.32; }
  }

  .hero__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-5);
  }

  /* Entrance: the hidden state exists only while JS is alive and motion is
     welcome, and ui.js flips .is-ready in a double rAF (plus a 1.2 s fallback,
     so a scripting error can never leave the page blank). */
  html.js:not(.rm) .hero [data-hero] {
    opacity: 0;
    transform: translateY(12px);
    will-change: transform, opacity;
  }
  html.js:not(.rm) .hero [data-hero="7"] { transform: translateY(20px) scale(0.985); }

  html.js:not(.rm) .hero.is-ready [data-hero] {
    opacity: 1;
    transform: none;
    transition: opacity var(--dur-4) var(--ease-out), transform var(--dur-4) var(--ease-out);
  }
  html.js:not(.rm) .hero.is-ready [data-hero="1"] { transition-delay: 0ms; }
  html.js:not(.rm) .hero.is-ready [data-hero="2"] { transition-delay: 60ms; }
  html.js:not(.rm) .hero.is-ready [data-hero="3"] { transition-delay: 120ms; }
  html.js:not(.rm) .hero.is-ready [data-hero="4"] { transition-delay: 180ms; }
  html.js:not(.rm) .hero.is-ready [data-hero="5"] { transition-delay: 240ms; }
  html.js:not(.rm) .hero.is-ready [data-hero="6"] { transition-delay: 280ms; }
  html.js:not(.rm) .hero.is-ready [data-hero="7"] {
    transition: opacity var(--dur-5) var(--ease-out) 300ms, transform var(--dur-5) var(--ease-emph) 300ms;
  }

  .hero h1 { max-width: 17ch; }
  .hero .lede { max-width: 56ch; margin-inline: auto; }

  .hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--r-full);
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-size: var(--fs-xs);
    font-weight: 500;
    color: var(--text-2);
    letter-spacing: 0;
    text-transform: none;
  }
  .hero__eyebrow .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--ok);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--ok) 22%, transparent);
    flex: none;
  }

  .hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    justify-content: center;
    margin-block-start: var(--sp-2);
  }

  .hero__chip { width: min(100%, 720px); }
  .hero__note { font-size: var(--fs-sm); color: var(--text-muted); max-width: 60ch; }

  .hero__media {
    position: relative;
    width: min(100%, 1120px);
    margin-block-start: var(--sp-8);
    /* the demo capture minus the cropped left edge - not quite 16:9, and the
       frame follows the media instead of shaving the panel header off */
    aspect-ratio: 1888 / 1080;
  }
  .hero__media .frame { position: absolute; inset: 0; }
  .hero__media img, .hero__media video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .hero__media video {
    opacity: 0;
    transition: opacity var(--dur-4) var(--ease-out);
  }
  .hero__media video.is-playing { opacity: 1; }
  .hero__media img.is-hidden { visibility: hidden; }

  .hero__play {
    position: absolute;
    inset-block-end: var(--sp-5);
    inset-inline-end: var(--sp-5);
    z-index: 2;
    background: rgb(23 23 23 / 0.82);
    color: #fff;
    border: 1px solid rgb(255 255 255 / 0.16);
    backdrop-filter: blur(8px);
  }
  .hero__play:hover { background: rgb(23 23 23 / 0.95); }
  .hero__play[hidden] { display: none; }

  @media (min-width: 641px) {
    .hero figcaption { text-align: center; margin-inline: auto; }
  }

  @media (max-width: 640px) {
    .hero { text-align: start; }
    .hero__inner { align-items: stretch; }
    .hero .lede, .hero figcaption { margin-inline: 0; }
    .hero__cta { justify-content: stretch; }
    .hero__cta .btn { flex: 1 1 100%; }
    /* full-bleed media on phones: the frame's rounded box wastes width there */
    .hero__media {
      width: 100vw;
      margin-inline: calc(50% - 50vw);
    }
    .hero__media .frame { border-radius: var(--r-12); }
  }

  /* ---------- fact strip -------------------------------------------------- */

  .proof {
    padding-block: var(--sp-10);
    border-block: 1px solid var(--border);
    background: var(--bg-elev);
  }
  .proof__grid {
    display: grid;
    gap: var(--sp-6);
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
  .proof__item {
    display: flex;
    gap: var(--sp-4);
    align-items: flex-start;
  }
  .proof__item svg { width: 22px; height: 22px; flex: none; color: var(--accent-text); margin-block-start: 2px; }
  .proof__item h3 { font-size: var(--fs-base); margin-block-end: 2px; }
  .proof__item p { font-size: var(--fs-sm); color: var(--text-muted); max-width: 32ch; }

  /* ---------- feature cards ----------------------------------------------- */

  .features__grid {
    display: grid;
    gap: var(--sp-5);
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }

  /* reserved for the upcoming feature-card demo clips */
  .card__clip {
    margin-block: var(--sp-4) 0;
    border-radius: var(--r-8);
    overflow: hidden;
    background: var(--surface-media);
    aspect-ratio: 16 / 10;
    box-shadow: 0 0 0 1px var(--border-media);
  }
  .card__clip video, .card__clip img { width: 100%; height: 100%; object-fit: cover; }

  /* ---------- tour -------------------------------------------------------- */

  .tour .tabs__panels {
    aspect-ratio: 1400 / 853;
    border-radius: var(--r-20);
    background: var(--surface-media);
    box-shadow: var(--shadow-media);
    overflow: hidden;
  }
  .tour .panel { height: 100%; }
  .tour figure, .tour picture, .tour img { height: 100%; }
  .tour img { width: 100%; object-fit: cover; }
  .tour figcaption {
    position: absolute;
    inset-inline: 0;
    inset-block-end: 0;
    margin: 0;
    padding: var(--sp-10) var(--sp-6) var(--sp-5);
    font-size: var(--fs-sm);
    color: #d8dade;
    max-width: none;
    background: linear-gradient(to top, rgb(0 0 0 / 0.82), rgb(0 0 0 / 0.55) 55%, transparent);
    display: flex;
    align-items: flex-end;
    gap: var(--sp-4);
    flex-wrap: wrap;
  }
  .tour figcaption span { max-width: 68ch; }
  .tour figcaption .btn { margin-inline-start: auto; }
  .tour .btn--ghost {
    color: #fff;
    border-color: rgb(255 255 255 / 0.25);
    background: rgb(0 0 0 / 0.35);
    backdrop-filter: blur(6px);
  }
  .tour .btn--ghost:hover { border-color: #fff; background: rgb(0 0 0 / 0.55); }
  .tour__after {
    margin-block-start: var(--sp-5);
    font-size: var(--fs-sm);
    color: var(--text-muted);
  }

  @media (max-width: 640px) {
    .tour figcaption {
      position: static;
      background: none;
      color: var(--text-muted);
      padding: var(--sp-4) 0 0;
    }
    .tour .tabs__panels { overflow: visible; box-shadow: none; background: none; }
    /* The dark plate moves onto the picture: the caption is static below the
       image here, and inside a dark figure it would sit light-on-dark. */
    .tour .panel figure { border-radius: 0; overflow: visible; background: none; box-shadow: none; }
    .tour .panel picture { display: block; border-radius: var(--r-12); overflow: hidden; background: var(--surface-media); box-shadow: var(--shadow-media); }
    .tour .tabs__panels { aspect-ratio: auto; }
    .tour .tabs__panels--stacked .panel { position: absolute; }
    .tour .tabs__panels--stacked .panel.is-active { position: relative; }
    .tour figcaption .btn { margin-inline-start: 0; }
    .tour .btn--ghost { color: var(--text-2); background: transparent; border-color: var(--border); }
  }

  /* ---------- two-way ----------------------------------------------------- */

  .two-way__grid {
    display: grid;
    gap: var(--sp-6);
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    /* stretch: uneven bottom edges read as a mistake at this size */
  }
  .rule-card {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--r-12);
    overflow: hidden;
  }
  .rule-card > h3 {
    padding: var(--sp-4) var(--sp-5);
    font-size: var(--fs-base);
    border-block-end: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--sp-3);
  }
  .rule-card > h3 svg { width: 20px; height: 20px; color: var(--accent-text); flex: none; }
  .rule-card__body { padding: var(--sp-5); display: grid; gap: var(--sp-3); }
  .rule-card__body p { font-size: var(--fs-sm); color: var(--text-2); }

  .flow { display: grid; gap: var(--sp-2); }
  .flow__row {
    display: grid;
    grid-template-columns: 68px 1fr;
    gap: var(--sp-3);
    align-items: center;
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-8);
    background: var(--surface-3);
    border: 1px solid var(--border);
    font-size: var(--fs-sm);
  }
  .flow__tag {
    font-size: var(--fs-2xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent-text);
  }
  .rule-card pre {
    margin: 0;
    padding: var(--sp-4) var(--sp-5);
    background: var(--code-bg);
    border-radius: var(--r-8);
    overflow-x: auto;
    border: 1px solid var(--border);
  }
  .rule-card pre code { color: #e6e8ea; font-size: var(--fs-xs); line-height: 1.6; }

  /* ---------- install ----------------------------------------------------- */

  .install__grid {
    display: grid;
    gap: var(--sp-10);
    grid-template-columns: minmax(0, 1.35fr) minmax(260px, 1fr);
    align-items: start;
  }
  @media (max-width: 900px) {
    .install__grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  }
  .install__main { display: grid; gap: var(--sp-5); min-width: 0; }
  /* .install__main is itself a grid: its items default to min-width:auto and the
     unbreakable install command would push .tabs to 880px+, straight through the
     right column. min-width:0 lets the pre's own overflow-x do its job. */
  .install__main > * { min-width: 0; }
  .install__side { display: grid; gap: var(--sp-6); }

  .steps { counter-reset: step; display: grid; gap: var(--sp-4); list-style: none; padding: 0; }
  .steps li {
    display: grid;
    grid-template-columns: 30px 1fr;
    gap: var(--sp-4);
    align-items: start;
    font-size: var(--fs-sm);
    color: var(--text-2);
  }
  .steps li::before {
    counter-increment: step;
    content: counter(step);
    display: grid;
    place-items: center;
    width: 30px; height: 30px;
    border-radius: 50%;
    background: color-mix(in oklab, var(--accent) 16%, transparent);
    color: var(--accent-text);
    font-size: var(--fs-xs);
    font-weight: 700;
  }

  .reqs { display: grid; gap: var(--sp-4); margin: 0; font-size: var(--fs-sm); }
  .reqs > div { display: grid; gap: 2px; }
  .reqs dt { font-weight: 600; color: var(--text); }
  .reqs dd { margin: 0; color: var(--text-muted); }

  .langs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    list-style: none;
    /* sits under a bulleted list inside the cards — align with the bullet text */
    padding: 0 0 0 var(--sp-5);
  }
  .langs li {
    padding: var(--sp-1) var(--sp-3);
    border-radius: var(--r-full);
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-size: var(--fs-xs);
    color: var(--text-2);
  }

  /* ---------- open source ------------------------------------------------- */

  .os__grid {
    display: grid;
    gap: var(--sp-6);
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
  .os__grid .card { display: flex; flex-direction: column; }
  .os__grid .card p { font-size: var(--fs-sm); color: var(--text-2); }
  .os__grid .card a { font-weight: 500; }
  /* the link line sits on the card's bottom edge in all three cards */
  .os__grid .card__link { margin-block-start: auto; padding-block-start: var(--sp-4); }

  /* ---------- faq --------------------------------------------------------- */

  .faq__list { border-block-start: 1px solid var(--border); max-width: 900px; }

  /* ---------- support ------------------------------------------------------ */

  .support__card {
    max-width: 660px;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-4);
    text-align: center;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--r-16);
    padding: var(--sp-10) var(--sp-8);
    box-shadow: var(--shadow-1);
  }
  .support__card p { color: var(--text-2); max-width: 52ch; }
  .support__cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--sp-4);
    margin-block-start: var(--sp-2);
  }
  @media (max-width: 479px) {
    .support__card { padding: var(--sp-8) var(--sp-5); }
    .support__cta { width: 100%; flex-direction: column; }
    .support__cta .btn { width: 100%; }
  }

  /* ---------- simple content pages (imprint, privacy, 404) ---------------- */

  .page {
    padding-block: var(--sp-16) var(--sp-10);
    max-width: 72ch;
  }
  .page h1 { font-size: var(--fs-2xl); margin-block-end: var(--sp-6); }
  .page h2 { font-size: var(--fs-lg); margin-block: var(--sp-8) var(--sp-3); }
  .page p, .page li { color: var(--text-2); }
  .page ul { padding-inline-start: var(--sp-5); display: grid; gap: var(--sp-2); }
  .page address { font-style: normal; color: var(--text-2); }
  .page .back { display: inline-flex; gap: var(--sp-2); margin-block-start: var(--sp-10); }
}