/* ============================================================
   Dead Reckoning — Grateful Dead Setlist Navigator
   ============================================================ */

/* ── Custom properties ──────────────────────────────────────── */
:root {
  --bg:           #07070f;
  --card:         rgba(255 255 255 / 0.04);
  --card-hover:   rgba(255 255 255 / 0.08);
  --border:       rgba(255 255 255 / 0.07);
  --border-hover: rgba(255 255 255 / 0.18);

  --red:          #d93025;
  --red-glow:     rgba(217, 48, 37, 0.3);
  --orange:       #e8821a;
  --amber:        #f5c518;
  --purple:       #7c4dff;
  --purple-dim:   rgba(124, 77, 255, 0.15);

  --text:         #f0e8da;
  --text-muted:   #7a6a5a;
  --text-dim:     #3e3028;

  --radius:       8px;
  --radius-lg:    14px;
  --max-w:        1160px;
  --ease:         cubic-bezier(0.16, 1, 0.3, 1);
  --t:            0.2s;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

[hidden] { display: none !important; }

/* ── Animated background ─────────────────────────────────────── */
.bg-glow {
  position: fixed;
  inset: -120px;
  z-index: -1;
  background:
    radial-gradient(ellipse 55% 65% at 15% 40%, rgba(124, 77, 255, 0.22) 0%, transparent 70%),
    radial-gradient(ellipse 55% 65% at 85% 55%, rgba(217, 48, 37, 0.16) 0%, transparent 70%),
    radial-gradient(ellipse 70% 70% at 50% 50%, rgba(10, 5, 30, 0.9) 0%, transparent 80%);
  animation: bgDrift 45s ease-in-out infinite alternate;
  will-change: transform;
}

@keyframes bgDrift {
  0%   { transform: translate(  0%,   0%) scale(1);    }
  25%  { transform: translate( -4%,   6%) scale(1.04); }
  50%  { transform: translate(  5%,  -4%) scale(0.97); }
  75%  { transform: translate( -3%,  -6%) scale(1.03); }
  100% { transform: translate(  6%,   3%) scale(1.01); }
}

/* ── Header ──────────────────────────────────────────────────── */
.site-header {
  position: relative;
  padding: 3.5rem 2rem 2rem;
  text-align: center;
}

.site-title {
  font-family: 'Alfa Slab One', serif;
  font-size: clamp(2rem, 7.5vw, 4.8rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
  margin-bottom: 0.65rem;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 2px var(--text);
}

.band-toggle {
  display: flex;
  gap: 0;
  margin-top: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.band-btn {
  padding: 0.35rem 1.1rem;
  border: none;
  border-radius: 100px;
  background: transparent;
  color: var(--text-muted);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t), color var(--t);
  white-space: nowrap;
}

.band-btn:hover:not(:disabled) {
  color: var(--text);
}

.band-btn.active {
  background: rgba(255 255 255 / 0.08);
  color: var(--text);
}

.band-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.mode-toggle {
  display: flex;
  gap: 0;
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.mode-btn {
  padding: 0.28rem 0.9rem;
  border: none;
  border-radius: 100px;
  background: transparent;
  color: var(--text-muted);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t), color var(--t);
  white-space: nowrap;
}

.mode-btn:hover {
  color: var(--text);
}

.mode-btn.active {
  background: rgba(124, 77, 255, 0.14);
  color: rgba(200, 185, 255, 0.92);
}

.site-subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 300;
  letter-spacing: 0.04em;
}

/* ── Main layout ─────────────────────────────────────────────── */
.main-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

/* ── Path breadcrumb ─────────────────────────────────────────── */
.path-section {
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.path-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  line-height: 1;
}

.path-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28rem 0.7rem;
  background: rgba(124, 77, 255, 0.1);
  border: 1px solid rgba(124, 77, 255, 0.28);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(200, 185, 255, 0.88);
  white-space: nowrap;
  animation: chipIn var(--t) var(--ease);
}

.path-chip-num {
  font-size: 0.65rem;
  color: rgba(150, 135, 210, 0.65);
  font-weight: 300;
}

.path-arrow {
  color: var(--text-dim);
  font-size: 0.75rem;
}

@keyframes chipIn {
  from { opacity: 0; transform: translateX(-6px); }
  to   { opacity: 1; transform: translateX(0);    }
}

.path-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-ghost {
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  transition: border-color var(--t), color var(--t), background var(--t);
}

.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--text);
  background: var(--card-hover);
}

/* ── Counter ─────────────────────────────────────────────────── */
.counter-section {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  margin-bottom: 0.6rem;
}

.counter-number {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: background 0.35s var(--ease);
}

.counter-number.found {
  background: linear-gradient(135deg, var(--amber) 0%, var(--orange) 55%, var(--red) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.counter-label {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ── Prompt ──────────────────────────────────────────────────── */
.prompt-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 300;
  letter-spacing: 0.03em;
  margin-bottom: 1.25rem;
}

/* ── Options grid ────────────────────────────────────────────── */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.7rem;
}

/* ── Song card ───────────────────────────────────────────────── */
.song-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.85rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  color: var(--text);
  overflow: hidden;
  transition:
    background var(--t) var(--ease),
    border-color var(--t) var(--ease),
    transform var(--t) var(--ease),
    box-shadow var(--t) var(--ease);
}

.song-card:hover {
  background: var(--card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255,255,255,0.05);
}

.song-card:active { transform: translateY(0); }

/* Frequency bar — width driven by --freq CSS var set from JS */
.song-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: calc(var(--freq, 0) * 100%);
  background: linear-gradient(90deg, var(--red), var(--orange));
  border-radius: 0 2px 0 0;
  opacity: 0.6;
  transition: opacity var(--t);
}

.song-card:hover::after { opacity: 1; }

/* Top-ranked card gets a warm glow */
.song-card.top {
  border-color: rgba(217, 48, 37, 0.28);
}
.song-card.top:hover {
  border-color: rgba(217, 48, 37, 0.55);
  box-shadow: 0 0 28px rgba(217, 48, 37, 0.12), 0 8px 28px rgba(0,0,0,0.45);
}

.song-name {
  font-size: 0.93rem;
  font-weight: 500;
  line-height: 1.35;
}

.song-count {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}



/* ── Show reveal ─────────────────────────────────────────────── */
.show-reveal {
  animation: revealIn 0.5s var(--ease);
}

@keyframes revealIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0);    }
}

.reveal-date {
  font-size: clamp(1.7rem, 4.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--amber), var(--orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.35rem;
}

.reveal-venue {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
}

.reveal-location {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.reveal-divider {
  height: 1px;
  background: var(--border);
  margin: 1.75rem 0;
}

.reveal-sets {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.reveal-set-name {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.reveal-song-list {
  list-style: none;
}

.reveal-song-item {
  display: flex;
  gap: 0.9rem;
  padding: 0.42rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.035);
  align-items: baseline;
  font-size: 0.93rem;
}

.reveal-song-item:last-child { border-bottom: none; }

.reveal-song-num {
  font-size: 0.72rem;
  color: var(--text-dim);
  min-width: 1.4rem;
  font-variant-numeric: tabular-nums;
}

/* Songs that were part of the chosen path */
.reveal-song-item.in-path .reveal-song-name {
  color: rgba(205, 190, 255, 0.92);
}
.reveal-song-item.in-path .reveal-song-num {
  color: rgba(155, 135, 215, 0.75);
}

.reveal-actions {
  display: flex;
  gap: 0.85rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn-setlist {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.35rem;
  background: rgba(217, 48, 37, 0.12);
  border: 1px solid rgba(217, 48, 37, 0.38);
  border-radius: var(--radius);
  color: rgba(255, 165, 145, 0.9);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t), border-color var(--t), color var(--t);
}

.btn-setlist:hover {
  background: rgba(217, 48, 37, 0.22);
  border-color: rgba(217, 48, 37, 0.65);
  color: rgba(255, 185, 165, 1);
}

.btn-again {
  padding: 0.6rem 1.35rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t), border-color var(--t), color var(--t);
}

.btn-again:hover {
  background: var(--card-hover);
  border-color: var(--border-hover);
  color: var(--text);
}

/* Multiple reveals (if identical setlists somehow) */
.reveal-separator {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 3rem 0;
}


/* ── Info button ─────────────────────────────────────────────── */
.btn-info {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--t), color var(--t), background var(--t);
}

.btn-info:hover {
  border-color: var(--border-hover);
  color: var(--text);
  background: var(--card-hover);
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease;
}

.modal {
  position: fixed;
  z-index: 301;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(520px, calc(100vw - 2rem));
  background: #0f0d1a;
  border: 1px solid rgba(124, 77, 255, 0.22);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem 2rem;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255,255,255,0.04);
  animation: modalIn 0.25s var(--ease);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: translate(-50%, -46%); }
  to   { opacity: 1; transform: translate(-50%, -50%); }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--t), color var(--t), background var(--t);
}

.modal-close:hover {
  border-color: var(--border-hover);
  color: var(--text);
  background: var(--card-hover);
}

.modal-title {
  font-family: 'Alfa Slab One', serif;
  font-size: 1.6rem;
  font-weight: 700;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1.5px var(--text);
  margin-bottom: 1rem;
}

.modal-def {
  font-size: 0.88rem;
  color: rgba(200, 185, 255, 0.75);
  font-style: normal;
  line-height: 1.6;
  padding: 0.75rem 1rem;
  background: rgba(124, 77, 255, 0.07);
  border-left: 2px solid rgba(124, 77, 255, 0.4);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 1.1rem;
}

.modal-body {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0.85rem;
}

.modal-body:last-child { margin-bottom: 0; }

.modal-body a {
  color: rgba(200, 185, 255, 0.85);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--t);
}

.modal-body a:hover { color: var(--text); }

.modal-body strong {
  color: var(--text);
  font-weight: 600;
}

/* ── Loading screen ──────────────────────────────────────────── */
.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.55s var(--ease);
}

.loading-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loading-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 300;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  .site-header { padding: 2.5rem 1rem 1.5rem; }
  .main-content { padding: 0 1rem 4rem; }
  .options-grid { grid-template-columns: repeat(auto-fill, minmax(155px, 1fr)); }
  .reveal-actions { flex-direction: column; align-items: flex-start; }
}