/* =======================================================================
   BRAND COLORS — change these once to re-theme the whole app each year.
   ======================================================================= */
:root {
  --bg:        #0b0d12;   /* page background (near-black, slight blue cast) */
  --surface:   #141822;   /* cards */
  --surface-2: #1c2230;   /* raised elements */
  --border:    #262d3d;
  --text:      #f3f5f9;   /* primary text */
  --text-dim:  #9aa4b8;   /* secondary text */
  --accent:    #2f7ff0;   /* blue — the one bold color (PLACEHOLDER: swap for exact brand blue) */
  --accent-dk: #1b5fc4;
  --tab-h:     64px;

  --font-display: "Oswald", system-ui, sans-serif;
  --font-body:    system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  overscroll-behavior-y: none;
  -webkit-font-smoothing: antialiased;
}

body { padding-bottom: calc(var(--tab-h) + env(safe-area-inset-bottom)); }

/* ---------- Header ---------- */
.appbar {
  position: sticky; top: 0; z-index: 40;
  background: linear-gradient(180deg, #131316 0%, rgba(19,19,22,.92) 100%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: calc(env(safe-area-inset-top) + 14px) 20px 14px;
  display: flex; align-items: center; gap: 12px;
}
.appbar__logo { height: 30px; width: auto; display: block; }
.appbar__title {
  font-family: var(--font-display);
  font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  font-size: 1.02rem; line-height: 1;
}
.appbar__title b { color: var(--accent); font-weight: 700; }
.appbar__year {
  margin-left: auto; font-family: var(--font-display);
  color: var(--text-dim); font-size: .8rem; letter-spacing: .12em;
}

/* ---------- Views ---------- */
.view { display: none; padding: 20px 16px 28px; animation: fade .25s ease; }
.view.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.eyebrow {
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: .18em; font-size: .72rem; color: var(--accent);
  margin-bottom: 6px;
}
.view__title {
  font-family: var(--font-display); text-transform: uppercase;
  font-weight: 700; font-size: 1.7rem; letter-spacing: .02em; margin-bottom: 18px;
}

/* ---------- Home ---------- */
.hero {
  text-align: center; padding: 30px 12px 22px;
  border: 1px solid var(--border); border-radius: 18px;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(228,176,63,.12), transparent 60%),
    var(--surface);
  margin-bottom: 20px;
}
.hero__logo { width: min(78%, 320px); height: auto; margin: 0 auto 14px; display: block; }
.hero__tag { color: var(--text-dim); font-size: 1.02rem; line-height: 1.5; max-width: 34ch; margin: 0 auto 16px; }
.hero__dates {
  display: inline-block; font-family: var(--font-display);
  text-transform: uppercase; letter-spacing: .1em; font-size: .92rem;
  color: var(--accent); border: 1px solid var(--accent-dk);
  border-radius: 999px; padding: 7px 16px;
}
.btn {
  display: block; width: 100%; text-align: center; cursor: pointer;
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: .08em;
  font-size: .98rem; font-weight: 600; text-decoration: none;
  padding: 15px; border-radius: 12px; border: none;
  background: var(--accent); color: #ffffff; margin-bottom: 12px;
  transition: transform .08s ease, background .2s ease;
}
.btn:active { transform: scale(.98); }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }

.home-quick { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 4px; }
.quick {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px 14px; text-align: left; cursor: pointer;
  color: var(--text); font-family: var(--font-body);
}
.quick__ico { font-size: 1.5rem; display: block; margin-bottom: 8px; }
.quick__lbl { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .06em; font-size: .82rem; }

/* ---------- iOS install nudge ---------- */
.ios-nudge {
  display: none; align-items: flex-start; gap: 10px;
  background: var(--surface-2); border: 1px solid var(--accent-dk);
  border-radius: 12px; padding: 13px 14px; margin-bottom: 18px;
  font-size: .88rem; line-height: 1.45; color: var(--text-dim);
}
.ios-nudge b { color: var(--text); }
.ios-nudge .x { margin-left: auto; color: var(--text-dim); cursor: pointer; font-size: 1.1rem; line-height: 1; }

/* ---------- Schedule ---------- */
.daytabs { display: flex; gap: 8px; margin-bottom: 18px; }
.daytab {
  flex: 1; padding: 12px 8px; border-radius: 12px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: .04em;
  text-align: center; transition: .18s;
}
.daytab b { display: block; font-size: .95rem; color: inherit; }
.daytab span { font-size: .72rem; }
.daytab.active { background: var(--accent); color: #ffffff; border-color: var(--accent); }
.daytab.active b { color: #ffffff; }

.day { display: none; }
.day.active { display: block; }

.slot { display: flex; gap: 14px; padding-bottom: 4px; }
.slot__time {
  flex: 0 0 68px; text-align: right; padding-top: 14px;
  font-family: var(--font-display); font-size: .82rem; color: var(--accent); letter-spacing: .02em;
}
.slot__rail { flex: 0 0 12px; position: relative; }
.slot__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); position: absolute; top: 18px; left: 1px; }
.slot__line { position: absolute; top: 18px; bottom: -4px; left: 5px; width: 2px; background: var(--border); }
.slot:last-child .slot__line { display: none; }
.slot__card {
  flex: 1; background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 13px 14px; margin-bottom: 12px;
}
.slot__card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 3px; }
.slot__meta { font-size: .82rem; color: var(--text-dim); }
.slot__meta .spk { color: var(--accent); }
.slot--break .slot__dot { background: var(--text-dim); }
.slot--break .slot__card { background: transparent; border-style: dashed; }
.tag {
  display: inline-block; font-size: .64rem; text-transform: uppercase; letter-spacing: .1em;
  padding: 2px 7px; border-radius: 5px; margin-top: 7px;
  background: var(--surface-2); color: var(--text-dim); border: 1px solid var(--border);
}

/* ---------- Speakers ---------- */
.spk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.spk-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 16px 12px; text-align: center;
}
.spk-photo, .spk-initials {
  width: 84px; height: 84px; border-radius: 50%; margin: 0 auto 11px;
  object-fit: cover; display: flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 2px solid var(--accent-dk);
  font-family: var(--font-display); font-size: 1.5rem; color: var(--accent);
}
.spk-card h3 { font-size: .95rem; font-weight: 600; }
.spk-card p { font-size: .76rem; color: var(--text-dim); margin-top: 2px; }

/* ---------- Info ---------- */
.info-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 16px; margin-bottom: 12px;
  display: flex; gap: 14px;
}
.info-card .ico { font-size: 1.5rem; flex: 0 0 auto; }
.info-card h3 { font-size: 1rem; margin-bottom: 4px; }
.info-card p { font-size: .9rem; color: var(--text-dim); line-height: 1.5; }

/* ---------- Map ---------- */
.map-wrap { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); margin-bottom: 14px; }
.map-wrap iframe { width: 100%; height: 260px; border: 0; display: block; filter: grayscale(.2) contrast(1.05); }
.venue-name { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .04em; font-size: 1.1rem; margin-bottom: 4px; }
.venue-addr { color: var(--text-dim); font-size: .9rem; margin-bottom: 14px; }

/* ---------- Bottom tab bar ---------- */
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  height: calc(var(--tab-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(19,19,22,.96); backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  display: flex;
}
.tabbtn {
  flex: 1; background: none; border: none; cursor: pointer; color: var(--text-dim);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  font-family: var(--font-body); font-size: .66rem; letter-spacing: .02em;
}
.tabbtn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.9; }
.tabbtn.active { color: var(--accent); }

@media (min-width: 640px) {
  .view { max-width: 620px; margin: 0 auto; }
  .appbar { max-width: 620px; margin: 0 auto; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* ---------- Session detail page ---------- */
.detail-back {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  background: none; border: none; color: var(--accent);
  font-family: var(--font-body); font-size: .9rem; margin-bottom: 14px; padding: 4px 0;
}
.detail-time {
  font-family: var(--font-display); color: var(--accent);
  letter-spacing: .04em; font-size: .9rem; margin-bottom: 4px;
}
.detail-title {
  font-family: var(--font-display); text-transform: uppercase;
  font-weight: 700; font-size: 1.5rem; line-height: 1.1; margin-bottom: 8px;
}
.detail-meta { color: var(--text-dim); font-size: .95rem; margin-bottom: 16px; }
.detail-meta .spk { color: var(--accent); }
.detail-desc { color: var(--text); font-size: 1rem; line-height: 1.6; margin-bottom: 20px; }
.detail-section-label {
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: .14em;
  font-size: .72rem; color: var(--text-dim); margin: 20px 0 10px;
}
.detail-video {
  width: 100%; border-radius: 12px; border: 1px solid var(--border);
  background: #000; display: block; margin-bottom: 8px;
}
.embed-frame {
  width: 100%; height: 560px; border: 1px solid var(--border);
  border-radius: 12px; background: var(--surface); display: block;
}

/* schedule rows are now tappable */
.slot__card { cursor: pointer; transition: border-color .15s ease; }
.slot__card:active { border-color: var(--accent); }
.slot__chev { float: right; color: var(--text-dim); font-size: 1.1rem; line-height: 1; margin-top: 2px; }
.slot--break .slot__card, .slot--meal .slot__card { cursor: default; }

/* ---------- Sponsors ---------- */
.sponsor-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sponsor-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px 14px; text-align: center;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 110px; cursor: pointer; color: var(--text); text-decoration: none;
}
.sponsor-card img { max-width: 100%; max-height: 60px; object-fit: contain; margin-bottom: 8px; }
.sponsor-card span { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .04em; font-size: .9rem; }
.sponsors-empty { color: var(--text-dim); text-align: center; padding: 40px 20px; line-height: 1.5; }

/* keep 6-tab bar legible on narrow phones */
.tabbtn { min-width: 0; padding: 0 2px; }
.tabbtn { font-size: .62rem; }
@media (min-width: 400px){ .tabbtn { font-size: .66rem; } }

/* Songbook flipbook needs more height to show pages comfortably */
/* Songbook flipbook: fill as much of the screen as possible so pages
   are big and readable. Accounts for header, the Back button, and the
   bottom tab bar. */
.songbook-frame {
  height: calc(100vh - var(--tab-h) - 150px);
  min-height: 520px;
  width: 100%;
}
/* let the songbook view use the full width (remove the desktop max-width cap) */
#view-songbook { max-width: 100% !important; padding-left: 10px; padding-right: 10px; }

/* songbook fullscreen button spacing */
.songbook-fs { margin-bottom: 12px; font-size: .9rem; padding: 11px; }