/* ==========================================================================
   Maze Engine — orient-luxury design system, extended
   Near-black grain base + gold accent stack (dark default / light toggle),
   with a torch-ember accent layered in for this app's adventure theme.
   ========================================================================== */

:root {
  --ol-bg: #09080b;
  --ol-panel: #14110c;
  --ol-panel-raised: #1a160f;
  --ol-border: rgba(201, 168, 76, 0.16);
  --ol-border-strong: rgba(201, 168, 76, 0.32);

  --ol-gold: #c9a84c;
  --ol-gold-soft: rgba(201, 168, 76, 0.55);
  --ol-gold-dim: rgba(201, 168, 76, 0.12);

  --ol-ember: #e0793f;
  --ol-ember-soft: rgba(224, 121, 63, 0.4);
  --ol-ember-dim: rgba(224, 121, 63, 0.14);

  --ol-text: #ede6d3;
  --ol-text-dim: #a89a7c;
  --ol-text-faint: #6f6450;

  --ol-wall: #241d13;
  --ol-wall-edge: rgba(201, 168, 76, 0.5);
  --ol-floor: #0c0a07;
  --ol-floor-alt: #100d09;

  --ol-start: #6fae5c;
  --ol-end: #d1483f;
  --ol-danger: #d1483f;
  --ol-success: #6fae5c;

  --ol-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  --ol-radius-sm: 6px;
  --ol-radius-md: 12px;
  --ol-radius-lg: 20px;

  --font-display: 'Cinzel', serif;
  --font-body: 'Cormorant Garamond', serif;
  --font-label: 'Syne', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

html[data-theme='light'] {
  --ol-bg: #f0ebe0;
  --ol-panel: #fbf7ee;
  --ol-panel-raised: #ffffff;
  --ol-border: rgba(138, 104, 32, 0.22);
  --ol-border-strong: rgba(138, 104, 32, 0.4);

  --ol-gold: #8a6820;
  --ol-gold-soft: rgba(138, 104, 32, 0.55);
  --ol-gold-dim: rgba(138, 104, 32, 0.1);

  --ol-ember: #b5581f;
  --ol-ember-soft: rgba(181, 88, 31, 0.35);
  --ol-ember-dim: rgba(181, 88, 31, 0.12);

  --ol-text: #2b2416;
  --ol-text-dim: #6b5d42;
  --ol-text-faint: #9c8f72;

  --ol-wall: #d9cca8;
  --ol-wall-edge: rgba(138, 104, 32, 0.55);
  --ol-floor: #f6f1e3;
  --ol-floor-alt: #efe8d5;

  --ol-shadow: 0 16px 40px rgba(90, 70, 30, 0.16);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ol-bg);
  color: var(--ol-text);
  font-family: var(--font-body);
  min-height: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

/* ---- Grain overlay ------------------------------------------------- */
.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  mix-blend-mode: soft-light;
  opacity: 0.5;
}
html[data-theme='light'] .grain-overlay { opacity: 0.25; }

a { color: var(--ol-gold); }

h1, h2, h3 {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  margin: 0;
  color: var(--ol-text);
}

button {
  font-family: var(--font-label);
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--ol-ember);
  outline-offset: 3px;
}

.label {
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--ol-text-dim);
}

.mono { font-family: var(--font-mono); }

/* ---- App shell ------------------------------------------------------- */
.app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  border-bottom: 1px solid var(--ol-border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  color: var(--ol-gold);
}

.brand-text h1 {
  font-size: 1.3rem;
  line-height: 1;
}

.brand-text .label {
  margin-top: 3px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--ol-border-strong);
  background: var(--ol-panel);
  color: var(--ol-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.icon-btn:hover { border-color: var(--ol-gold); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-label);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ol-text-dim);
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
}
.back-link:hover { color: var(--ol-gold); }
.back-link svg { width: 14px; height: 14px; }

main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.screen { display: none; flex: 1; }
.screen.is-active { display: flex; flex-direction: column; }

/* ---- Setup screen ------------------------------------------------------ */
.setup-screen {
  max-width: 980px;
  width: 100%;
  margin: 0 auto;
  padding: 56px 28px 80px;
  display: flex;
  flex-direction: column;
  gap: 46px;
}

.setup-hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.setup-hero .eyebrow {
  color: var(--ol-ember);
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.74rem;
}

.setup-hero h2 {
  font-size: clamp(2rem, 5vw, 3.1rem);
}

.setup-hero p {
  max-width: 560px;
  font-size: 1.2rem;
  color: var(--ol-text-dim);
  line-height: 1.5;
  margin: 0;
}

.setup-hero-glyph {
  width: 64px;
  height: 64px;
  color: var(--ol-ember);
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
}

.section-heading h3 {
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ol-gold);
}

.quest-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.quest-card {
  position: relative;
  background: var(--ol-panel);
  border: 1px solid var(--ol-border);
  border-radius: var(--ol-radius-md);
  padding: 20px 18px;
  text-align: left;
  color: var(--ol-text);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.quest-card:hover { transform: translateY(-3px); border-color: var(--ol-gold-soft); }
.quest-card.is-selected {
  border-color: var(--ol-gold);
  box-shadow: 0 0 0 1px var(--ol-gold), var(--ol-shadow);
}
.quest-card .quest-icon {
  width: 30px;
  height: 30px;
  color: var(--ol-ember);
}
.quest-card .quest-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.quest-card .quest-size {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ol-text-dim);
}
.quest-card .quest-desc {
  display: block;
  font-size: 0.95rem;
  color: var(--ol-text-dim);
  line-height: 1.4;
  margin: 0;
}

.custom-size-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
  padding: 14px 18px;
  border: 1px dashed var(--ol-border-strong);
  border-radius: var(--ol-radius-md);
}
.custom-size-row.is-active { border-style: solid; border-color: var(--ol-gold-soft); }
.custom-size-row label { font-family: var(--font-label); font-size: 0.78rem; color: var(--ol-text-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.custom-size-row input[type='range'] { flex: 1; accent-color: var(--ol-ember); }
.custom-size-row .custom-value { font-family: var(--font-mono); color: var(--ol-gold); min-width: 64px; text-align: right; }

.difficulty-row {
  display: flex;
  gap: 10px;
}

.pill {
  flex: 1;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--ol-border);
  background: var(--ol-panel);
  color: var(--ol-text-dim);
  font-family: var(--font-label);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}
.pill.is-selected {
  border-color: var(--ol-ember);
  color: var(--ol-ember);
  background: var(--ol-ember-dim);
}
.pill:hover { border-color: var(--ol-gold-soft); }

.cta-row {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}

.btn-primary {
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.9rem;
  padding: 16px 42px;
  border-radius: 999px;
  border: 1px solid var(--ol-gold);
  background: linear-gradient(180deg, var(--ol-gold) 0%, #a8863a 100%);
  color: #14110c;
  box-shadow: 0 10px 30px rgba(201, 168, 76, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(201, 168, 76, 0.32); }
.btn-primary svg { width: 16px; height: 16px; }

.btn-secondary {
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid var(--ol-border-strong);
  background: var(--ol-panel);
  color: var(--ol-text);
  transition: border-color 0.2s ease, transform 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-secondary:hover { border-color: var(--ol-gold); transform: translateY(-1px); }
.btn-secondary svg { width: 15px; height: 15px; }
.btn-secondary.is-active { border-color: var(--ol-ember); color: var(--ol-ember); }

.bests-panel {
  border-top: 1px solid var(--ol-border);
  padding-top: 28px;
}

.bests-empty {
  color: var(--ol-text-faint);
  font-size: 0.95rem;
  font-style: italic;
}

.bests-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.best-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--ol-panel);
  border: 1px solid var(--ol-border);
  border-radius: var(--ol-radius-sm);
}
.best-entry .best-label { font-family: var(--font-label); font-size: 0.78rem; color: var(--ol-text-dim); text-transform: capitalize; }
.best-entry .best-time { font-family: var(--font-mono); color: var(--ol-gold); font-size: 1.05rem; }

/* ---- Game screen --------------------------------------------------- */
.game-screen { flex: 1; display: flex; flex-direction: column; }

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 28px;
  border-bottom: 1px solid var(--ol-border);
}

.hud-stats {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}

.hud-stat { display: flex; flex-direction: column; gap: 2px; }
.hud-stat .stat-label {
  font-family: var(--font-label);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ol-text-faint);
}
.hud-stat .stat-value {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--ol-gold);
}

.hud-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ol-text-dim);
  border: 1px solid var(--ol-border);
  border-radius: 999px;
  padding: 5px 14px;
}

.maze-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  min-height: 0;
}

.maze-canvas-wrap {
  position: relative;
  border-radius: var(--ol-radius-md);
  border: 1px solid var(--ol-border-strong);
  box-shadow: var(--ol-shadow);
  overflow: hidden;
  background: var(--ol-floor);
  touch-action: none;
}

.maze-canvas-wrap canvas { display: block; }
#fogCanvas { position: absolute; top: 0; left: 0; pointer-events: none; }

.loading-veil {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ol-bg);
  z-index: 2;
  flex-direction: column;
  gap: 14px;
}
.loading-veil.is-hidden { display: none; }
.torch-spinner {
  width: 40px;
  height: 40px;
  color: var(--ol-ember);
  animation: flicker-spin 1.4s ease-in-out infinite;
}
@keyframes flicker-spin {
  0%, 100% { opacity: 0.55; transform: scale(0.94) rotate(0deg); }
  50% { opacity: 1; transform: scale(1.05) rotate(6deg); }
}
.loading-veil p { font-family: var(--font-label); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ol-text-dim); }

.error-veil {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--ol-bg);
  z-index: 3;
  text-align: center;
  padding: 30px;
}
.error-veil.is-visible { display: flex; }
.error-veil-inner { max-width: 340px; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.error-veil svg { width: 34px; height: 34px; color: var(--ol-danger); }
.error-veil h3 { font-size: 1.1rem; }
.error-veil p { color: var(--ol-text-dim); font-size: 0.98rem; line-height: 1.5; margin: 0; }

.controls-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 18px 28px 26px;
  border-top: 1px solid var(--ol-border);
}

.dpad {
  display: none;
  grid-template-columns: repeat(3, 46px);
  grid-template-rows: repeat(3, 46px);
  gap: 4px;
  margin-top: 8px;
}
.dpad button {
  border-radius: var(--ol-radius-sm);
  border: 1px solid var(--ol-border-strong);
  background: var(--ol-panel);
  color: var(--ol-gold);
  display: flex;
  align-items: center;
  justify-content: center;
}
.dpad button svg { width: 18px; height: 18px; }
.dpad button:active { background: var(--ol-gold-dim); }
.dpad .dpad-up { grid-column: 2; grid-row: 1; }
.dpad .dpad-left { grid-column: 1; grid-row: 2; }
.dpad .dpad-right { grid-column: 3; grid-row: 2; }
.dpad .dpad-down { grid-column: 2; grid-row: 3; }

.controls-hint {
  width: 100%;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ol-text-faint);
  margin-top: 2px;
}

/* ---- Victory modal --------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 4, 3, 0.72);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  padding: 20px;
}
.modal-backdrop.is-visible { display: flex; }

.victory-card {
  width: 100%;
  max-width: 420px;
  background: var(--ol-panel-raised);
  border: 1px solid var(--ol-gold-soft);
  border-radius: var(--ol-radius-lg);
  box-shadow: var(--ol-shadow);
  padding: 40px 34px;
  text-align: center;
  position: relative;
  animation: scroll-in 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes scroll-in {
  from { opacity: 0; transform: translateY(14px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.victory-icon { width: 46px; height: 46px; color: var(--ol-ember); margin-bottom: 6px; }
.victory-card h2 { font-size: 1.7rem; margin-bottom: 6px; }
.victory-card .victory-sub { color: var(--ol-text-dim); font-size: 1.05rem; margin: 0 0 24px; }

.victory-stats {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-bottom: 10px;
}
.victory-stat .stat-value { font-family: var(--font-mono); font-size: 1.5rem; color: var(--ol-gold); }
.victory-stat .stat-label { font-family: var(--font-label); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ol-text-faint); }

.new-best-badge {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 14px auto 0;
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ol-ember);
  border: 1px solid var(--ol-ember-soft);
  background: var(--ol-ember-dim);
  border-radius: 999px;
  padding: 6px 16px;
  width: fit-content;
}
.new-best-badge.is-visible { display: flex; }
.new-best-badge svg { width: 13px; height: 13px; }

.victory-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 26px;
}
.victory-actions .btn-primary,
.victory-actions .btn-secondary { justify-content: center; }

/* ---- Toasts ------------------------------------------------------------ */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--ol-panel-raised);
  border: 1px solid var(--ol-gold-soft);
  color: var(--ol-text);
  padding: 12px 22px;
  border-radius: 999px;
  font-family: var(--font-label);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  box-shadow: var(--ol-shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 1000;
}
.toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- Responsive ---------------------------------------------------- */
@media (max-width: 760px) {
  .quest-grid { grid-template-columns: repeat(2, 1fr); }
  .app-header { padding: 16px 18px; }
  .setup-screen { padding: 36px 18px 60px; gap: 34px; }
  .hud { padding: 12px 16px; }
  .controls-bar { padding: 14px 16px 20px; }
  .dpad { display: grid; }
}

@media (max-width: 480px) {
  .quest-grid { grid-template-columns: 1fr 1fr; }
  .difficulty-row { flex-wrap: wrap; }
  .pill { min-width: 30%; }
  .victory-card { padding: 32px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}