/* ==========================================================================
   Update Prague Planner – mobile first, light/dark via tokens
   ========================================================================== */

:root {
  --bg: #f6f4ef;
  --bg-elev: #ffffff;
  --bg-sunk: #ece9e2;
  --line: #ddd8cd;
  --text: #1d1c1a;
  --text-2: #5d5a53;
  --text-3: #8b877d;
  --accent: #c98a00;          /* Update gold */
  --accent-ink: #1d1c1a;
  --accent-soft: #fbefd0;
  --fixed: #1f7a4d;
  --fixed-soft: #dcf1e5;
  --warn: #b4441b;
  --warn-soft: #fbe3d8;
  --shadow: 0 1px 2px rgb(30 25 15 / .06), 0 4px 14px rgb(30 25 15 / .06);
  --shadow-lg: 0 -8px 40px rgb(0 0 0 / .18);
  --hall-l: 42%;              /* lightness used for hall colours */
  --radius: 14px;
  --tap: 48px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121416;
    --bg-elev: #1b1e21;
    --bg-sunk: #0c0d0f;
    --line: #2d3136;
    --text: #ecebe7;
    --text-2: #aeaca5;
    --text-3: #7c7a74;
    --accent: #f2b632;
    --accent-ink: #17140c;
    --accent-soft: #3a2f12;
    --fixed: #5fd39a;
    --fixed-soft: #143525;
    --warn: #ff8a5c;
    --warn-soft: #3c1f14;
    --shadow: 0 1px 2px rgb(0 0 0 / .4);
    --shadow-lg: 0 -8px 40px rgb(0 0 0 / .6);
    --hall-l: 64%;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121416;
  --bg-elev: #1b1e21;
  --bg-sunk: #0c0d0f;
  --line: #2d3136;
  --text: #ecebe7;
  --text-2: #aeaca5;
  --text-3: #7c7a74;
  --accent: #f2b632;
  --accent-ink: #17140c;
  --accent-soft: #3a2f12;
  --fixed: #5fd39a;
  --fixed-soft: #143525;
  --warn: #ff8a5c;
  --warn-soft: #3c1f14;
  --shadow: 0 1px 2px rgb(0 0 0 / .4);
  --shadow-lg: 0 -8px 40px rgb(0 0 0 / .6);
  --hall-l: 64%;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: none;
}
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
[hidden] { display: none !important; }
.i { width: 22px; height: 22px; flex: none; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top, 0px);
}
.topbar__row {
  display: flex; align-items: center; gap: 4px;
  max-width: 760px; margin: 0 auto; padding: 10px 12px 8px 16px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.brand__mark {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink); font-weight: 800; font-size: 18px;
}
.brand__title { font-weight: 700; font-size: 16px; line-height: 1.15; }
.brand__sub { font-size: 13px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.icon-btn {
  width: 44px; height: 44px; border: 0; background: transparent; border-radius: 12px;
  display: grid; place-items: center; color: var(--text-2);
}
.icon-btn:active { background: var(--bg-sunk); }

.topbar__controls { max-width: 760px; margin: 0 auto; padding: 0 16px 10px; }
.topbar__controls:empty { display: none; }

/* Segmented day switch */
.seg {
  display: flex; background: var(--bg-sunk); border-radius: 12px; padding: 3px; gap: 3px;
}
.seg button {
  flex: 1; border: 0; background: transparent; border-radius: 9px; padding: 8px 6px;
  font-size: 14px; font-weight: 600; color: var(--text-2); min-height: 40px;
}
.seg button[aria-pressed="true"] { background: var(--bg-elev); color: var(--text); box-shadow: var(--shadow); }
.seg small { display: block; font-weight: 500; font-size: 12px; color: var(--text-3); }

.searchrow { display: flex; gap: 8px; margin-top: 8px; }
.search {
  flex: 1; display: flex; align-items: center; gap: 8px; padding: 0 12px;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px; min-height: 42px;
  color: var(--text-3);
}
.search input { flex: 1; border: 0; background: transparent; outline: none; min-width: 0; font-size: 16px; color: var(--text); padding: 9px 0; }
.search input::placeholder { color: var(--text-3); }
.filter-btn {
  border: 1px solid var(--line); background: var(--bg-elev); border-radius: 12px; padding: 0 12px;
  font-size: 14px; font-weight: 600; color: var(--text-2); min-height: 42px; white-space: nowrap;
}
.filter-btn[data-active="true"] { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }

.chips { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; margin: 8px -16px 0; padding: 0 16px 2px; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: none; border: 1px solid var(--line); background: var(--bg-elev); color: var(--text-2);
  border-radius: 999px; padding: 6px 12px; font-size: 13px; font-weight: 600; min-height: 34px;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip[aria-pressed="true"] { background: var(--text); color: var(--bg); border-color: var(--text); }
.chip .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--hall); }

/* ---------- Main ---------- */
main { max-width: 760px; margin: 0 auto; padding: 8px 12px calc(96px + var(--safe-b)); outline: none; }

.slot { margin-top: 14px; }
.slot__head {
  display: flex; align-items: baseline; gap: 8px; padding: 6px 4px;
  position: sticky; top: var(--controls-h, 120px); z-index: 5;
  background: linear-gradient(var(--bg) 70%, transparent);
}
.slot__time { font-weight: 800; font-size: 17px; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.slot__end { color: var(--text-3); font-size: 14px; font-variant-numeric: tabular-nums; }
.slot__note { margin-left: auto; font-size: 12px; font-weight: 700; display: inline-flex; gap: 4px; align-items: center; }
.slot__note--warn { color: var(--warn); }
.slot__note--ok { color: var(--fixed); }
.slot__note .i { width: 16px; height: 16px; }

.cards { display: grid; gap: 8px; }

/* ---------- Session card ---------- */
.card {
  --hall: hsl(var(--h, 41) var(--s, 80%) var(--hall-l));
  position: relative; display: flex; align-items: stretch;
  background: var(--bg-elev); border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1.5px solid transparent; overflow: hidden;
  transition: border-color .15s, background-color .15s;
}
.card::before { content: ""; width: 5px; flex: none; background: var(--hall); }
.card__main {
  flex: 1; min-width: 0; padding: 12px 6px 12px 12px; text-align: left; border: 0; background: transparent;
  display: block;
}
.card__meta { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; font-size: 12.5px; color: var(--text-2); font-weight: 600; }
.card__hall { color: var(--hall); font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.card__title { font-size: 16px; font-weight: 700; line-height: 1.3; margin: 4px 0 6px; text-wrap: pretty; }
.card__speakers { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-2); }
.avatars { display: flex; }
.avatars img, .avatars span {
  width: 26px; height: 26px; border-radius: 50%; object-fit: cover; background: var(--bg-sunk);
  border: 2px solid var(--bg-elev); margin-left: -8px;
}
.avatars > :first-child { margin-left: 0; }
.card__tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.tag { font-size: 11.5px; padding: 2px 8px; border-radius: 999px; background: var(--bg-sunk); color: var(--text-2); font-weight: 600; }
.tag--cat { background: var(--accent-soft); color: var(--text); }
.tag--warn { background: var(--warn-soft); color: var(--warn); }

.level { display: inline-flex; align-items: center; gap: 4px; }
.level__bars { display: inline-flex; gap: 2px; align-items: flex-end; }
.level__bars i { display: block; width: 3px; border-radius: 1px; background: color-mix(in srgb, var(--text-3) 40%, transparent); }
.level__bars i:nth-child(1) { height: 6px; } .level__bars i:nth-child(2) { height: 9px; } .level__bars i:nth-child(3) { height: 12px; }
.level__bars i.on { background: var(--text); }

/* Mark toggle – the "one tap" target */
.mark {
  flex: none; width: 60px; border: 0; background: transparent; color: var(--text-3);
  display: grid; place-items: center; align-content: center; gap: 2px; font-size: 10.5px; font-weight: 700;
  border-left: 1px solid var(--line);
}
.mark .i { width: 26px; height: 26px; }
.mark:active { background: var(--bg-sunk); }
.card[data-state="marked"] { border-color: var(--accent); }
.card[data-state="marked"] .mark { color: var(--accent); background: var(--accent-soft); border-left-color: transparent; }
.card[data-state="fixed"] { border-color: var(--fixed); }
.card[data-state="fixed"] .mark { color: var(--fixed); background: var(--fixed-soft); border-left-color: transparent; }
.card[data-conflict="true"] { border-color: var(--warn); }
.card[data-conflict="true"] .mark { color: var(--warn); background: var(--warn-soft); }
.card[data-alt="true"] { opacity: .62; }
.card.is-past { opacity: .55; }
.card.is-now { box-shadow: 0 0 0 3px color-mix(in srgb, var(--fixed) 35%, transparent), var(--shadow); }

/* Breaks */
.break {
  display: flex; align-items: center; gap: 10px; color: var(--text-3); font-size: 13.5px; font-weight: 600;
  padding: 6px 6px; margin-top: 12px;
}
.break::before, .break::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.break span { font-variant-numeric: tabular-nums; }

/* ---------- Plan view ---------- */
.plan-day { margin-top: 18px; }
.plan-day h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); margin: 0 4px 2px; }
.conflict-box {
  border: 1.5px dashed var(--warn); border-radius: calc(var(--radius) + 4px); padding: 8px; background: color-mix(in srgb, var(--warn-soft) 45%, transparent);
}
.conflict-box__head { display: flex; align-items: center; gap: 6px; color: var(--warn); font-size: 13px; font-weight: 700; padding: 2px 4px 8px; }
.conflict-box__head .i { width: 18px; height: 18px; }
.decide {
  display: flex; gap: 6px; padding: 8px 10px 10px 17px; border-top: 1px solid var(--line); background: var(--bg-elev);
}
.btn {
  border: 1px solid var(--line); background: var(--bg-elev); border-radius: 10px; padding: 8px 12px;
  font-size: 13.5px; font-weight: 700; min-height: 38px; display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
}
.btn .i { width: 18px; height: 18px; }
.btn--primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn--fixed { background: var(--fixed-soft); color: var(--fixed); border-color: transparent; }
.btn--ghost { background: transparent; }
.btn--block { width: 100%; justify-content: center; }
.card-wrap { background: var(--bg-elev); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.card-wrap .card { box-shadow: none; border-radius: var(--radius) var(--radius) 0 0; }

.free {
  display: flex; align-items: center; gap: 10px; color: var(--text-3); font-size: 13.5px;
  padding: 10px 12px; border: 1.5px dashed var(--line); border-radius: var(--radius); margin-top: 8px;
}
.free a { color: var(--accent); font-weight: 700; text-decoration: none; margin-left: auto; }

.summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.stat { background: var(--bg-elev); border-radius: var(--radius); padding: 10px 12px; box-shadow: var(--shadow); }
.stat b { display: block; font-size: 22px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12px; color: var(--text-2); font-weight: 600; }
.stat--warn b { color: var(--warn); }
.stat--ok b { color: var(--fixed); }

.now-banner {
  margin-top: 12px; padding: 12px 14px; border-radius: var(--radius); background: var(--fixed-soft); color: var(--text);
  display: flex; gap: 10px; align-items: center; font-size: 14px;
}
.now-banner .i { color: var(--fixed); }

.empty { text-align: center; color: var(--text-2); padding: 48px 20px; }
.empty .big { font-size: 40px; }
.empty p { margin: 8px auto; max-width: 32ch; }

/* ---------- Speakers view ---------- */
.speaker-row {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px; border: 0; width: 100%; text-align: left;
  background: var(--bg-elev); border-radius: var(--radius); box-shadow: var(--shadow); margin-top: 8px;
}
.speaker-row img, .speaker-row .ph { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; background: var(--bg-sunk); flex: none; }
.speaker-row b { display: block; font-size: 15px; }
.speaker-row small { color: var(--text-2); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- Bottom tab bar ---------- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  display: flex; justify-content: center; gap: 4px;
  padding: 6px 8px calc(6px + var(--safe-b));
  background: color-mix(in srgb, var(--bg-elev) 90%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-top: 1px solid var(--line);
}
.tab {
  position: relative; flex: 1; max-width: 160px; display: grid; justify-items: center; gap: 2px;
  padding: 6px 4px; border-radius: 12px; text-decoration: none; color: var(--text-3); font-size: 11.5px; font-weight: 700;
}
.tab[aria-current="page"] { color: var(--text); }
.tab[aria-current="page"] .i { color: var(--accent); }
.tab__badge {
  position: absolute; top: 2px; left: calc(50% + 6px); min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--accent); color: var(--accent-ink); font-size: 11px; line-height: 18px; text-align: center;
}
.tab__badge[data-warn="true"] { background: var(--warn); color: #fff; }

/* ---------- Bottom sheet ---------- */
.sheet { position: fixed; inset: 0; z-index: 50; }
.sheet__backdrop { position: absolute; inset: 0; background: rgb(0 0 0 / .45); animation: fade .2s ease; }
.sheet__panel {
  position: absolute; left: 0; right: 0; bottom: 0; max-height: 92dvh; max-width: 760px; margin: 0 auto;
  background: var(--bg); border-radius: 20px 20px 0 0; box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; animation: up .25s cubic-bezier(.2,.8,.2,1);
}
.sheet__grip { width: 40px; height: 5px; border-radius: 3px; background: var(--line); margin: 8px auto 0; flex: none; }
.sheet__close { position: absolute; top: 6px; right: 6px; }
.sheet__body { overflow-y: auto; padding: 8px 18px calc(24px + var(--safe-b)); overscroll-behavior: contain; }
@keyframes up { from { transform: translateY(40px); opacity: .4; } }
@keyframes fade { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .sheet__panel, .sheet__backdrop { animation: none; } }

.detail__hall { --hall: hsl(var(--h, 41) var(--s, 80%) var(--hall-l)); display: inline-flex; align-items: center; gap: 6px; font-weight: 800; color: var(--hall); text-transform: uppercase; letter-spacing: .04em; font-size: 13px; margin-top: 8px; }
.detail__hall::before { content: ""; width: 10px; height: 10px; border-radius: 3px; background: var(--hall); }
.detail h1 { font-size: 22px; line-height: 1.25; margin: 6px 40px 10px 0; text-wrap: balance; }
.facts { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 14px; margin: 12px 0; }
.facts dt { color: var(--text-3); font-weight: 600; }
.facts dd { margin: 0; font-weight: 600; }
.detail__actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 6px; }
.detail__actions .btn { flex: 1; justify-content: center; min-height: 46px; font-size: 15px; }
.prose { font-size: 15.5px; line-height: 1.6; color: var(--text); }
.prose p { margin: 0 0 .8em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 .8em; }
.prose a { color: var(--accent); }
.section-title { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); margin: 22px 0 8px; font-weight: 800; }
.spk { background: var(--bg-elev); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); margin-bottom: 10px; }
.spk__head { display: flex; gap: 12px; align-items: center; }
.spk__head img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; background: var(--bg-sunk); flex: none; }
.spk__name { font-weight: 800; font-size: 16px; }
.spk__tag { color: var(--text-2); font-size: 13.5px; }
.spk .prose { font-size: 14.5px; margin-top: 10px; }
.spk .prose br + br, .spk .prose p + br { display: none; }
.links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.links a { font-size: 13px; padding: 5px 10px; border-radius: 999px; background: var(--bg-sunk); text-decoration: none; font-weight: 600; color: var(--text-2); }
.conflict-note { display: flex; gap: 8px; align-items: flex-start; background: var(--warn-soft); color: var(--warn); padding: 10px 12px; border-radius: 12px; font-size: 14px; font-weight: 600; margin-top: 10px; }
.conflict-note .i { width: 20px; height: 20px; }
.conflict-note a { color: inherit; }

.menu-list { display: grid; gap: 8px; margin-top: 8px; }
.menu-list .btn { justify-content: flex-start; min-height: 50px; font-size: 15px; }
.muted { color: var(--text-3); font-size: 13px; }

.filter-group { margin-top: 14px; }
.filter-group .chips { flex-wrap: wrap; overflow: visible; margin: 0; padding: 0; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(84px + var(--safe-b)); transform: translate(-50%, 20px);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 12px; font-size: 14px; font-weight: 600;
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 60; max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.toast button { background: transparent; border: 0; color: var(--accent); font-weight: 800; margin-left: 10px; padding: 0; }

@media (min-width: 700px) {
  .card__title { font-size: 17px; }
  main { padding-left: 16px; padding-right: 16px; }
}