/* DiveTube: light version of the Dive with Jess family style. Navy header bar, white page.
   Dark mode is the family's own navy theme. */

@font-face { font-family: "Archivo"; src: url("../fonts/archivo-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Inter"; src: url("../fonts/inter-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("../fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2"); font-weight: 100 800; font-display: swap; }

:root {
  --bar: #060e16; --bar-ink: #e6edf2; --bar-muted: #9fb0bf; --bar-input: #07121b; --bar-line: rgba(230, 237, 242, .22);
  --bg: #ffffff; --ink: #060e16; --muted: #4a5d6e; --panel: #f3f6f8;
  --line: rgba(6, 14, 22, .12); --line-strong: rgba(6, 14, 22, .2);
  --signal: #ffc933; --signal-hover: #ffd660; --on-signal: #060e16;
  --link: #0e7490; --gue: #0e7490; --thumb-bg: #0c1a26;
  --lesson-bg: #faece7; --lesson-ink: #712b13; --lesson-line: #d85a30;
  --font-display: "Archivo", "Arial Narrow", Arial, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --r: 2px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #060e16; --ink: #e6edf2; --muted: #9fb0bf; --panel: #0c1a26;
  --line: rgba(230, 237, 242, .12); --line-strong: rgba(230, 237, 242, .22);
  --link: #5fd4e0; --gue: #5fd4e0; --lesson-bg: rgba(216, 90, 48, .16); --lesson-ink: #ffb59a;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #060e16; --ink: #e6edf2; --muted: #9fb0bf; --panel: #0c1a26;
    --line: rgba(230, 237, 242, .12); --line-strong: rgba(230, 237, 242, .22);
    --link: #5fd4e0; --gue: #5fd4e0; --lesson-bg: rgba(216, 90, 48, .16); --lesson-ink: #ffb59a;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.55 var(--font-body); }
a { color: var(--link); }
img { max-width: 100%; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 20; background: var(--signal); color: var(--on-signal); padding: 8px 12px; font: 600 12px var(--font-mono); text-transform: uppercase; }
.skip:focus { left: 8px; }
.sq { display: inline-block; width: 6px; height: 6px; background: currentColor; flex: none; }

/* Header bar: identical to the family's navy bar */
.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--bar); color: var(--bar-ink); border-bottom: 1px solid var(--bar-line); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--bar-ink); text-decoration: none; flex: none; }
.mark { position: relative; width: 18px; height: 18px; background: var(--signal); }
.mark::after { content: ""; position: absolute; inset: 6px; background: var(--bar); }
.wordmark { font: 900 21px/1 var(--font-display); text-transform: uppercase; letter-spacing: -.01em; }
.wordmark-accent { color: var(--signal); }
.search { flex: 1; max-width: 560px; }
.search input { width: 100%; padding: 8px 11px; background: var(--bar-input); color: var(--bar-ink); border: 1px solid var(--bar-line); border-radius: var(--r); font: 400 13px var(--font-mono); }
.search input::placeholder { color: #8296a8; text-transform: uppercase; letter-spacing: .06em; font-size: 12px; }
.topnav { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.topnav a { color: var(--bar-muted); font: 500 12px var(--font-mono); text-transform: uppercase; letter-spacing: .08em; text-decoration: none; }
.topnav a:hover { color: var(--bar-ink); }
.icon-button { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; background: transparent; border: 1px solid var(--bar-line); border-radius: var(--r); color: var(--bar-ink); cursor: pointer; }
.sun-moon { width: 14px; height: 14px; border-radius: 50%; background: linear-gradient(90deg, var(--signal) 50%, transparent 50%); border: 2px solid var(--signal); }
.menu-button { display: none; }
.bars, .bars::before, .bars::after { display: block; width: 16px; height: 2px; background: currentColor; position: relative; }
.bars::before, .bars::after { content: ""; position: absolute; left: 0; }
.bars::before { top: -5px; } .bars::after { top: 5px; }

/* Layout */
.layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); max-width: 1480px; margin: 0 auto; }
.sidebar { position: sticky; top: 56px; align-self: start; display: flex; flex-direction: column; gap: 2px; padding: 20px 12px; }
.sidebar a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; color: var(--ink); text-decoration: none; font: 500 12px var(--font-mono); text-transform: uppercase; letter-spacing: .08em; border-radius: var(--r); }
.sidebar a:hover, .sidebar a[aria-current="page"] { background: var(--panel); }
.side-rule { height: 1px; background: var(--line); margin: 10px 10px; }
main { min-width: 0; padding: 24px 24px 64px; }

/* Hero, chips, shelves */
.hero { padding: 8px 0 24px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.eyebrow { margin: 0 0 8px; color: var(--muted); font: 500 12px var(--font-mono); text-transform: uppercase; letter-spacing: .1em; }
.display { margin: 0 0 12px; font: 900 clamp(2rem, 1.3rem + 3vw, 3.6rem)/1.02 var(--font-display); text-transform: uppercase; letter-spacing: -.01em; }
.hl { background: var(--signal); color: var(--on-signal); padding: 0 .14em; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.lede { max-width: 60ch; margin: 0 0 18px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 6px 9px; background: transparent; color: var(--ink); border: 1px solid var(--line-strong); border-radius: var(--r); font: 500 11px var(--font-mono); text-transform: uppercase; letter-spacing: .07em; cursor: pointer; }
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--signal); border-color: var(--signal); color: var(--on-signal); }
.shelf { margin-top: 28px; }
.shelf-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.shelf-title, .section-title, .page-title { margin: 0; font: 800 1.2rem/1.2 var(--font-display); text-transform: uppercase; letter-spacing: .01em; }
.page-title { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem); font-weight: 900; margin-bottom: 8px; }
.shelf-link { font: 500 12px var(--font-mono); text-transform: uppercase; letter-spacing: .08em; }
.grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px 16px; }
@media (min-width: 480px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 900px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1200px) { .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.empty { padding: 24px; background: var(--panel); border-radius: var(--r); color: var(--muted); }

/* Cards */
.card { min-width: 0; }
.card[hidden] { display: none; }
.thumb { position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden; border-radius: var(--r); background: var(--thumb-bg); }
.thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.duration { position: absolute; right: 6px; bottom: 6px; padding: 2px 5px; background: rgba(6, 14, 22, .88); color: #e6edf2; border-radius: var(--r); font: 500 11px var(--font-mono); }
.card-title { margin: 9px 0 2px; font: 600 15px/1.35 var(--font-body); overflow-wrap: anywhere; }
.card-title a { color: var(--ink); text-decoration: none; }
.card-title a:hover { text-decoration: underline; text-decoration-color: var(--signal); text-decoration-thickness: 2px; }
.card-channel { margin: 0; color: var(--muted); font-size: 13px; overflow-wrap: anywhere; }
.card-meta { margin: 2px 0 0; color: var(--muted); font: 500 11px var(--font-mono); text-transform: uppercase; letter-spacing: .06em; }
.badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 6px; border: 1px solid currentColor; border-radius: var(--r); font: 600 11px var(--font-mono); text-transform: uppercase; letter-spacing: .06em; text-decoration: none; }
.badge-gue { color: var(--gue); }
.badge-lesson { color: var(--lesson-ink); background: var(--lesson-bg); border-color: var(--lesson-line); }

/* Video page */
.watch { max-width: 980px; }
.player { position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; padding: 0; border: 0; border-radius: var(--r); overflow: hidden; background: var(--thumb-bg); cursor: pointer; }
.player img { display: block; width: 100%; height: 100%; object-fit: cover; }
.player iframe { display: block; width: 100%; height: 100%; border: 0; }
.play { position: absolute; left: 50%; top: 50%; width: 68px; height: 68px; transform: translate(-50%, -50%); background: var(--signal); border-radius: var(--r); }
.play::after { content: ""; position: absolute; left: 27px; top: 21px; border-style: solid; border-width: 13px 0 13px 20px; border-color: transparent transparent transparent var(--on-signal); }
.player:hover .play { background: var(--signal-hover); }
.watch-title { margin: 16px 0 4px; font: 700 clamp(1.3rem, 1.1rem + .8vw, 1.75rem)/1.25 var(--font-body); overflow-wrap: anywhere; }
.watch-channel { margin: 0; color: var(--muted); }
.rec-line { margin: 10px 0 0; font: 500 12px var(--font-mono); text-transform: uppercase; letter-spacing: .06em; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.btn { display: inline-flex; align-items: center; padding: 8px 12px; background: transparent; color: var(--ink); border: 1px solid var(--line-strong); border-radius: var(--r); font: 600 12px var(--font-mono); text-transform: uppercase; letter-spacing: .07em; text-decoration: none; cursor: pointer; }
.btn:hover { border-color: var(--ink); }
.btn[aria-pressed="true"] { background: var(--signal); border-color: var(--signal); color: var(--on-signal); }
.lesson { margin: 18px 0; padding: 12px 16px; background: var(--lesson-bg); color: var(--lesson-ink); border-left: 3px solid var(--lesson-line); }
.lesson .label { color: inherit; margin-top: 0; }
.lesson p { margin: 0; }
.label { margin: 18px 0 4px; color: var(--muted); font: 600 11px var(--font-mono); text-transform: uppercase; letter-spacing: .1em; }
.summary { font-size: 17px; margin: 0; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px 20px; margin: 20px 0 0; padding: 14px 16px; background: var(--panel); border-radius: var(--r); }
.facts dt { color: var(--muted); font: 600 11px var(--font-mono); text-transform: uppercase; letter-spacing: .1em; }
.facts dd { margin: 2px 0 0; }
.quotes { margin-top: 28px; }
.quote { margin: 14px 0; padding: 2px 0 2px 14px; border-left: 2px solid var(--line-strong); }
.quote p { margin: 0 0 4px; font-size: 16px; overflow-wrap: anywhere; }
.quote footer { color: var(--muted); font: 500 11px var(--font-mono); text-transform: uppercase; letter-spacing: .05em; overflow-wrap: anywhere; }
.quote .stance { color: var(--ink); font-weight: 700; }
.quote-strongly_recommends { border-left-color: var(--signal); }
.quote-warns_against { border-left-color: var(--lesson-line); }

/* Lists and text pages */
.prose { max-width: 68ch; }
.prose h2 { font: 800 1.1rem/1.3 var(--font-display); text-transform: uppercase; margin: 28px 0 8px; }
.list-intro { color: var(--muted); max-width: 64ch; margin: 0 0 18px; }
.instructor-country { margin-top: 26px; }
.instructor { padding: 12px 0; border-bottom: 1px solid var(--line); }
.instructor-name { font-weight: 600; }
.instructor-links { font: 500 12px var(--font-mono); text-transform: uppercase; letter-spacing: .06em; }
.path-step { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; align-items: start; }
.path-num { font: 900 1.4rem/1 var(--font-display); color: var(--muted); }

/* Footer: family cross-links */
.footer { margin-top: 40px; padding: 26px 16px 34px; border-top: 1px solid var(--line); text-align: center; color: var(--muted); font: 500 11px/1.8 var(--font-mono); text-transform: uppercase; letter-spacing: .08em; }
.footer p { margin: 0; }
.footer a { color: var(--ink); text-decoration-color: var(--signal); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* Phones and tablets */
@media (max-width: 899px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .menu-button { display: inline-flex; }
  .sidebar { display: none; position: static; padding: 8px 16px 0; }
  .sidebar.open { display: flex; }
  main { padding: 18px 16px 48px; }
}
@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; gap: 10px; padding: 10px 12px; }
  .search { order: 3; flex-basis: 100%; max-width: none; }
  .topnav { gap: 10px; }
}

/* Keyboard shortcuts dialog */
.shortcuts { max-width: 420px; width: calc(100% - 32px); border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--bg); color: var(--ink); padding: 20px; }
.shortcuts::backdrop { background: rgba(6, 14, 22, .55); }
.shortcuts form { margin-top: 16px; }

/* Suggestion form */
.suggest { display: grid; gap: 12px; max-width: 560px; margin-top: 12px; }
.suggest label { display: grid; gap: 4px; font: 600 11px var(--font-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.suggest input, .suggest textarea { font: 400 15px var(--font-body); color: var(--ink); background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--r); padding: 9px 10px; text-transform: none; letter-spacing: 0; }
.suggest button { justify-self: start; }
.form-status { margin: 0; font-size: 14px; }