/* BeeTravel — EN personal cabinet design system.
   Mobile-first, warm premium travel/audio feel, honey accent.
   Dark by default; light theme honored via prefers-color-scheme + [data-theme]. */

:root {
  --bg: #14110d;
  --bg-2: #1a1611;
  --card: #1f1a14;
  --card-2: #26201a;
  --fg: #f7f1e7;
  --muted: #a89c8a;
  --faint: #7d7161;
  --border: #2d271f;
  --border-2: #3a3227;
  --accent: #f5b23e;
  --accent-strong: #ffca64;
  --accent-ink: #2a1d05;
  --danger: #ec7b84;
  --danger-bg: #33191c;
  --ok: #83d69e;
  --ok-bg: #17271d;
  --ring: rgba(245, 178, 62, 0.38);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --r-lg: 20px;
  --r: 14px;
  --r-sm: 10px;
  --maxw: 680px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f3ec;
    --bg-2: #f1ebe0;
    --card: #ffffff;
    --card-2: #faf6ee;
    --fg: #221d16;
    --muted: #6d6353;
    --faint: #9a8e7c;
    --border: #e7ded0;
    --border-2: #ddd2c0;
    --accent: #d99315;
    --accent-strong: #c8830c;
    --accent-ink: #ffffff;
    --danger: #c0434e;
    --danger-bg: #fbe9ea;
    --ok: #2f8b53;
    --ok-bg: #e8f5ec;
    --ring: rgba(217, 147, 21, 0.3);
    --shadow: 0 10px 30px rgba(80, 60, 20, 0.12);
  }
}
:root[data-theme="dark"] { color-scheme: dark; }
:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 500px at 100% -10%, rgba(245, 178, 62, 0.10), transparent 60%),
    radial-gradient(900px 400px at -10% 0%, rgba(245, 178, 62, 0.06), transparent 55%),
    var(--bg);
  color: var(--fg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- App bar ---------------------------------------------------------- */
.appbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.2px; color: var(--fg); }
.brand:hover { text-decoration: none; }
.brand__mark { width: 26px; height: 26px; flex: none; }
.brand__name { font-size: 17px; }
.brand__name b { color: var(--accent-strong); }
.appbar__right { display: inline-flex; align-items: center; gap: 14px; font-size: 14px; }

/* ---- Layout ----------------------------------------------------------- */
.container { max-width: var(--maxw); margin: 0 auto; padding: 22px 16px 72px; }
.stack > * + * { margin-top: 14px; }

.auth-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 18px calc(28px + env(safe-area-inset-bottom));
}
.auth-shell .auth-inner { width: 100%; max-width: 420px; }

/* ---- Typography ------------------------------------------------------- */
h1 { font-size: clamp(24px, 6vw, 30px); line-height: 1.15; margin: 0 0 6px; letter-spacing: -0.02em; }
h2 { font-size: 18px; margin: 0 0 8px; letter-spacing: -0.01em; }
.lede { color: var(--muted); margin: 0 0 20px; font-size: 15px; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.center { text-align: center; }

/* ---- Cards ------------------------------------------------------------ */
.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
  box-shadow: var(--shadow);
}

/* ---- Hero mark (auth) ------------------------------------------------- */
.hero-mark {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: grid; place-items: center;
  border-radius: 18px;
  background: linear-gradient(160deg, var(--accent-strong), var(--accent));
  box-shadow: 0 8px 24px rgba(245, 178, 62, 0.30);
}
.hero-mark svg { width: 30px; height: 30px; }

/* ---- Forms ------------------------------------------------------------ */
.field { margin-top: 14px; }
.field:first-child { margin-top: 0; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
.input {
  width: 100%;
  padding: 13px 14px;
  border-radius: var(--r);
  border: 1px solid var(--border-2);
  background: var(--bg-2);
  color: var(--fg);
  font-size: 16px; /* >=16px avoids iOS zoom-on-focus */
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input::placeholder { color: var(--faint); }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--ring); }

/* ---- Buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-size: 15px; font-weight: 700;
  cursor: pointer;
  transition: transform 0.05s, filter 0.15s, background 0.15s, border-color 0.15s;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn--block { width: 100%; }
.btn--primary { background: linear-gradient(180deg, var(--accent-strong), var(--accent)); color: var(--accent-ink); }
.btn--primary:hover { filter: brightness(1.04); text-decoration: none; }
.btn--ghost { background: transparent; border-color: var(--border-2); color: var(--fg); }
.btn--ghost:hover { border-color: var(--accent); text-decoration: none; }
.btn[disabled], .btn.is-loading { opacity: 0.65; cursor: default; pointer-events: none; }
.btn .btn__spin { width: 16px; height: 16px; display: none; }
.btn.is-loading .btn__spin { display: inline-block; }

/* ---- Spinner ---------------------------------------------------------- */
.spin {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid color-mix(in srgb, currentColor 30%, transparent);
  border-top-color: currentColor;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-row { display: flex; align-items: center; gap: 10px; color: var(--muted); padding: 8px 0; }

/* ---- Messages / banners ---------------------------------------------- */
.msg { margin-top: 14px; font-size: 14px; min-height: 18px; }
.msg--error { color: var(--danger); }
.msg--ok { color: var(--ok); }
.banner {
  border-radius: var(--r); padding: 12px 14px; font-size: 14px;
  border: 1px solid transparent; margin-bottom: 16px;
}
.banner--error { background: var(--danger-bg); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }

/* ---- Chips / badges --------------------------------------------------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px;
  background: var(--bg-2); border: 1px solid var(--border);
  color: var(--muted); font-size: 12.5px; font-weight: 600;
}
.badge {
  display: inline-block; padding: 3px 9px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  color: var(--accent-strong); font-size: 11.5px; font-weight: 700;
  vertical-align: middle;
}

/* ---- Guide cards (library) ------------------------------------------- */
.guides { display: grid; gap: 14px; }
.guide-card {
  display: grid; grid-template-columns: 84px 1fr; gap: 14px;
  align-items: center;
  padding: 14px;
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border); border-radius: var(--r-lg);
  color: inherit;
  box-shadow: var(--shadow);
  transition: border-color 0.15s, transform 0.05s;
}
.guide-card:hover { border-color: var(--accent); text-decoration: none; }
.guide-card:active { transform: translateY(1px); }
.guide-cover {
  width: 84px; height: 84px; border-radius: var(--r);
  background: linear-gradient(150deg, var(--accent-strong), var(--accent));
  display: grid; place-items: center; flex: none;
}
.guide-cover svg { width: 40px; height: 40px; opacity: 0.9; }
.guide-card__title { font-weight: 700; font-size: 16px; }
.guide-card__meta { color: var(--muted); font-size: 13px; margin-top: 3px; }
.guide-card__cta { color: var(--accent-strong); font-size: 13px; font-weight: 700; margin-top: 8px; display: inline-flex; align-items: center; gap: 4px; }

/* ---- Player + chapters ----------------------------------------------- */
.player audio { width: 100%; margin-top: 4px; border-radius: 12px; }
.player__note { color: var(--faint); font-size: 12.5px; margin: 12px 0 0; }

.chapters { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 8px; }
.chapter {
  display: grid; grid-template-columns: 34px 1fr 22px; align-items: center; gap: 12px;
  width: 100%; text-align: left;
  padding: 12px 14px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--r); color: var(--fg);
  font: inherit; cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.chapter:hover { border-color: var(--border-2); }
.chapter__idx {
  width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; flex: none;
  background: var(--card-2); border: 1px solid var(--border);
  color: var(--muted); font-size: 13px; font-weight: 700;
}
.chapter__title { font-size: 15px; font-weight: 600; min-width: 0; }
.chapter__eq { width: 18px; height: 18px; color: var(--accent); opacity: 0; }
.chapter.is-active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--bg-2)); }
.chapter.is-active .chapter__idx { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.chapter.is-active .chapter__eq { opacity: 1; }

/* ---- Empty state ------------------------------------------------------ */
.empty { text-align: center; padding: 26px 12px; }
.empty__mark { width: 54px; height: 54px; margin: 0 auto 12px; opacity: 0.5; }
.empty h2 { margin-bottom: 4px; }

/* ---- Skeleton --------------------------------------------------------- */
.skeleton {
  border-radius: var(--r); background: var(--card-2);
  position: relative; overflow: hidden;
}
.skeleton::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--fg) 7%, transparent), transparent);
  transform: translateX(-100%); animation: shimmer 1.3s infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }
.sk-card { height: 112px; }

.backlink { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted); font-weight: 600; margin-bottom: 12px; }
.backlink:hover { color: var(--accent-strong); text-decoration: none; }

.section-foot { margin-top: 22px; font-size: 14px; color: var(--muted); text-align: center; }

/* ====================================================================== */
/* Public product / landing page (batumi-embankment.html)                 */
/* ====================================================================== */
.nav__links { display: inline-flex; align-items: center; gap: 16px; font-size: 14px; font-weight: 600; }
.nav__links a { color: var(--muted); }
.nav__links a.is-accent { color: var(--accent-strong); }

.lp { max-width: 860px; margin: 0 auto; padding: 0 16px 80px; }
.section { margin-top: 44px; }
.section > h2 { font-size: clamp(19px, 4.5vw, 23px); margin-bottom: 4px; }
.section__sub { color: var(--muted); margin: 0 0 18px; }

/* Hero */
.hero {
  position: relative;
  margin-top: 18px;
  padding: 34px 22px 30px;
  border-radius: 26px;
  border: 1px solid var(--border);
  background:
    radial-gradient(700px 260px at 85% -20%, rgba(245, 178, 62, 0.22), transparent 60%),
    linear-gradient(180deg, var(--card-2), var(--card));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--accent-strong); font-weight: 700; font-size: 13px;
  letter-spacing: 0.04em; text-transform: uppercase;
}
.hero__title { font-size: clamp(30px, 8.5vw, 48px); line-height: 1.05; letter-spacing: -0.03em; margin: 12px 0 10px; }
.hero__desc { color: var(--muted); font-size: clamp(15px, 3.6vw, 17px); max-width: 60ch; margin: 0; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.cta-row .btn { flex: 1 1 auto; min-width: 150px; }
.btn--lg { padding: 15px 20px; font-size: 16px; }
.btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }
.price-note { margin-top: 12px; font-size: 13px; color: var(--faint); }

/* Feature cards */
.feature-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.feature {
  padding: 18px; border-radius: var(--r-lg);
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border);
}
.feature__icon {
  width: 40px; height: 40px; border-radius: 12px; margin-bottom: 12px;
  display: grid; place-items: center; color: var(--accent-ink);
  background: linear-gradient(160deg, var(--accent-strong), var(--accent));
}
.feature__icon svg { width: 22px; height: 22px; }
.feature h3 { margin: 0 0 5px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }

/* Chapter list */
.chapter-list-grid { display: grid; grid-template-columns: 1fr; gap: 8px; }
.ch {
  display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 12px;
  padding: 11px 14px; border-radius: var(--r);
  background: var(--bg-2); border: 1px solid var(--border);
}
.ch__n { color: var(--faint); font-size: 13px; font-weight: 700; text-align: right; }
.ch__t { font-size: 14.5px; font-weight: 600; min-width: 0; }
.tag { font-size: 11px; font-weight: 800; letter-spacing: 0.02em; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.tag--demo { background: color-mix(in srgb, var(--accent) 22%, transparent); color: var(--accent-strong); }
.tag--full { background: var(--card-2); color: var(--faint); border: 1px solid var(--border); }

/* Steps */
.steps { display: grid; grid-template-columns: 1fr; gap: 12px; counter-reset: step; }
.step { display: grid; grid-template-columns: 34px 1fr; gap: 14px; align-items: start; }
.step__n {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--card-2); border: 1px solid var(--border-2);
  color: var(--accent-strong); font-weight: 800; font-size: 14px;
}
.step h3 { margin: 3px 0 3px; font-size: 15px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 52px; padding: 26px 16px calc(30px + env(safe-area-inset-bottom));
  text-align: center; color: var(--faint); font-size: 13px;
}
.site-footer .brand { justify-content: center; margin-bottom: 8px; color: var(--fg); }

@media (min-width: 680px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .chapter-list-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 18px 22px; }
  .cta-row .btn { flex: 0 1 auto; }
}

/* ====================================================================== */
/* Chapter reader (chapter.html)                                          */
/* ====================================================================== */
.reader-bar { display: flex; align-items: center; gap: 12px; }
.reader-bar .btn-chapters {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 12px; border-radius: 10px; font-size: 13px; font-weight: 700;
  background: var(--bg-2); border: 1px solid var(--border-2); color: var(--fg); cursor: pointer;
}
.reader-bar .btn-chapters svg { width: 16px; height: 16px; }

.reader { display: grid; grid-template-columns: 1fr; gap: 0; }

/* Sidebar (table of contents) */
.toc {
  border-right: 1px solid var(--border);
  background: var(--bg-2);
  min-height: 100%;
}
.toc__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  font-weight: 700; font-size: 14px;
}
.toc__close { background: none; border: 0; color: var(--muted); font-size: 20px; cursor: pointer; line-height: 1; }
.toc__list { list-style: none; margin: 0; padding: 8px; overflow-y: auto; }
.toc__item {
  display: grid; grid-template-columns: 26px 1fr auto; align-items: center; gap: 10px;
  width: 100%; text-align: left; border: 0; background: none;
  padding: 9px 10px; border-radius: 10px; color: var(--fg); cursor: pointer; font: inherit;
  text-decoration: none;
}
.toc__item:hover { background: var(--card-2); text-decoration: none; }
.toc__item .n { color: var(--faint); font-size: 12px; font-weight: 700; text-align: right; }
.toc__item .t { font-size: 13.5px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.toc__item.is-active { background: color-mix(in srgb, var(--accent) 12%, var(--bg-2)); }
.toc__item.is-active .n { color: var(--accent-strong); }
.toc__item.is-active .t { font-weight: 700; }
.toc__item .mini { font-size: 10px; font-weight: 800; color: var(--accent-strong); }

/* Reader main content */
.reader-main { padding: 22px 16px 80px; }
.reader-main .inner { max-width: 720px; margin: 0 auto; }
.chapter-indicator { color: var(--accent-strong); font-weight: 700; font-size: 13px; letter-spacing: 0.03em; text-transform: uppercase; }
.reader-title { font-size: clamp(24px, 6vw, 34px); line-height: 1.12; letter-spacing: -0.02em; margin: 8px 0 14px; }

.reader-audio { margin: 6px 0 8px; }
.reader-audio audio { width: 100%; }

.prose { font-size: 17px; line-height: 1.75; color: var(--fg); }
.prose p { margin: 0 0 18px; }
.prose p:last-child { margin-bottom: 0; }
.text-pending { color: var(--muted); font-style: italic; padding: 8px 0; }

/* Media placeholder slot */
.media-slot { margin: 22px 0; }
.media-slot__box {
  aspect-ratio: 16 / 9; width: 100%;
  border: 1px dashed var(--border-2); border-radius: var(--r);
  background:
    repeating-linear-gradient(135deg, transparent 0 12px, color-mix(in srgb, var(--fg) 3%, transparent) 12px 24px),
    var(--bg-2);
  display: grid; place-items: center; text-align: center; padding: 16px;
}
.media-slot__label { color: var(--faint); font-size: 13px; font-weight: 600; }
.media-slot__caption { margin-top: 8px; color: var(--muted); font-size: 13.5px; }

/* ---- Phase 2: interleaved chapter photos with captions ---- */
.chapter-photo {
  margin: 24px 0 20px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-2);
}
.chapter-photo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
}
.chapter-photo__caption {
  padding: 10px 14px 14px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.5;
  text-align: left;
}
.chapter-gallery { margin-top: 8px; }

/* ---- Language toggle (EN/RU) ---- */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  margin-left: auto;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.lang-btn {
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}
.lang-btn.is-active {
  background: var(--accent-strong);
  color: #fff;
}
.lang-btn:not(.is-active):hover {
  color: var(--fg);
  background: var(--bg-2);
}

/* Prev / next */
.chapter-nav { display: flex; gap: 10px; margin-top: 30px; }
.chapter-nav a, .chapter-nav span {
  flex: 1; display: flex; flex-direction: column; gap: 2px;
  padding: 13px 16px; border-radius: var(--r);
  border: 1px solid var(--border-2); background: var(--bg-2); color: var(--fg);
  text-decoration: none; min-width: 0;
}
.chapter-nav .dir { font-size: 11px; font-weight: 800; color: var(--faint); text-transform: uppercase; letter-spacing: 0.04em; }
.chapter-nav .nm { font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chapter-nav a:hover { border-color: var(--accent); text-decoration: none; }
.chapter-nav .next { text-align: right; }
.chapter-nav .is-disabled { opacity: 0.4; pointer-events: none; }

/* Mobile drawer behavior (default). Desktop grid at >=900px. */
.toc-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 40; }
.toc {
  position: fixed; top: 0; left: 0; bottom: 0; width: 82%; max-width: 320px;
  z-index: 50; transform: translateX(-100%); transition: transform 0.22s ease;
}
.reader.drawer-open .toc { transform: translateX(0); }
.reader.drawer-open .toc-overlay { display: block; }

@media (min-width: 900px) {
  .reader { grid-template-columns: 300px 1fr; }
  .toc { position: sticky; top: 57px; height: calc(100dvh - 57px); transform: none; width: auto; max-width: none; z-index: 1; }
  .toc__close { display: none; }
  .toc-overlay { display: none !important; }
  .reader-bar .btn-chapters { display: none; }
  .reader.sidebar-collapsed { grid-template-columns: 0 1fr; }
  .reader.sidebar-collapsed .toc { display: none; }
  .reader.sidebar-collapsed .reader-bar .btn-chapters { display: inline-flex; }
}