/* Shared light/dark presentation and the Arcade atmosphere. */

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0a08;
  --bg-deep: #060403;
  --surface: #17110c;
  --surface-2: #1f1811;
  --surface-3: #281f15;
  --border: #2b2017;
  --border-light: #493625;
  --text: #f4ead8;
  --text-dim: #b6a58a;
  --text-faint: #98866b;
  --accent: #d4a04c;
  --accent-bright: #f0c068;
  --accent-deep: #e0aa52;
  --accent-soft: rgba(212, 160, 76, 0.13);
  --success: #46c882;
  --error: #d96b4a;
  --shadow-deep: 0 28px 68px -34px rgba(0, 0, 0, 0.88);
}

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at 8% -8%, rgba(212, 160, 76, 0.10), transparent 31rem),
    radial-gradient(circle at 96% 14%, rgba(126, 72, 34, 0.10), transparent 29rem),
    linear-gradient(180deg, #100c09 0, var(--bg) 32rem, #080604 100%) !important;
  color: var(--text) !important;
}

html[data-theme="dark"] body::before {
  opacity: 0.18 !important;
  mix-blend-mode: normal;
}

html[data-theme="dark"] ::selection {
  color: #fff8ea;
  background: rgba(212, 160, 76, 0.34);
}

/* The hub background now belongs to every Arcade route. */
html[data-section="arcade"] body {
  position: relative;
  isolation: isolate;
  background:
    linear-gradient(rgba(47, 117, 171, 0.055) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, rgba(47, 117, 171, 0.055) 1px, transparent 1px) 0 0 / 32px 32px,
    radial-gradient(circle at 9% -6%, rgba(97, 87, 209, 0.20), transparent 31rem),
    radial-gradient(circle at 94% 13%, rgba(255, 171, 42, 0.22), transparent 28rem),
    linear-gradient(180deg, #f9fbff 0, #edf5fb 31rem, #eef2f7 100%) !important;
}

html[data-theme="dark"][data-section="arcade"] body {
  background:
    linear-gradient(rgba(109, 126, 177, 0.075) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, rgba(109, 126, 177, 0.075) 1px, transparent 1px) 0 0 / 32px 32px,
    radial-gradient(circle at 9% -6%, rgba(92, 74, 176, 0.20), transparent 31rem),
    radial-gradient(circle at 94% 13%, rgba(212, 160, 76, 0.14), transparent 28rem),
    linear-gradient(180deg, #120e0d 0, #0d0a08 31rem, #070504 100%) !important;
}

html[data-section="arcade"] body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.34;
  background:
    linear-gradient(90deg, transparent 0 8px, rgba(242, 88, 35, 0.46) 8px 16px, transparent 16px 32px, rgba(255, 181, 43, 0.52) 32px 40px, transparent 40px 64px) 7vw 8rem / 64px 8px no-repeat,
    linear-gradient(90deg, rgba(70, 111, 190, 0.48) 0 8px, transparent 8px 24px, rgba(100, 85, 208, 0.46) 24px 40px, transparent 40px 64px) calc(100% - 6vw) 17rem / 64px 8px no-repeat,
    linear-gradient(90deg, transparent 0 16px, rgba(255, 181, 43, 0.48) 16px 24px, transparent 24px 40px, rgba(242, 88, 35, 0.40) 40px 56px, transparent 56px 64px) calc(100% - 11vw) calc(100% - 9rem) / 64px 8px no-repeat;
}

html[data-section="arcade"] body > * {
  position: relative;
  z-index: 1;
}

html[data-theme="dark"] .topnav {
  border-color: rgba(73, 54, 37, 0.88) !important;
  background: rgba(20, 15, 11, 0.88) !important;
  box-shadow: 0 14px 36px -24px rgba(0, 0, 0, 0.92) !important;
}

html[data-theme="dark"] .social-link { color: var(--text-dim) !important; }

html[data-theme="dark"] :is(
  .stats-strip, .tool-card, .panel, .belt-widget, .control-panel,
  .results-panel, .result-card, .info-card, .content-card, .brand-box,
  .faq-item, .related-link, .game-card, .diff-btn, .choice-btn, .modal,
  .feature-spotlight, .tool-category
) {
  color: var(--text) !important;
  background: rgba(23, 17, 12, 0.96) !important;
  border-color: var(--border-light) !important;
  box-shadow: var(--shadow-deep) !important;
}

html[data-theme="dark"] :is(
  .btn, .mode-btn, .position-btn, .filter-btn, .preset-btn, .tab-btn,
  .toggle-btn, .action-btn, .string-btn
) {
  color: var(--text) !important;
  background: var(--surface-2) !important;
  border-color: var(--border-light) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22) !important;
}

html[data-theme="dark"] :is(
  .btn-primary, .primary-btn, .submit-btn, .mode-btn.active,
  .position-btn.active, .filter-btn.active, .preset-btn.active,
  .tab-btn.active, .toggle-btn.active, .action-btn.primary
) {
  color: #1a1208 !important;
  border-color: transparent !important;
  background: linear-gradient(180deg, var(--accent-bright), var(--accent)) !important;
  box-shadow: 0 12px 26px -14px rgba(212, 160, 76, 0.72) !important;
}

html[data-theme="dark"] :is(select, input[type="text"], input[type="email"], input[type="number"], textarea) {
  color: var(--text) !important;
  background: var(--surface-2) !important;
  border-color: var(--border-light) !important;
}

html[data-theme="dark"] :is(input, textarea)::placeholder {
  color: var(--text-faint) !important;
}

html[data-theme="dark"] .timer-track { background: #251d15 !important; }
html[data-theme="dark"] .modal textarea { background: var(--bg-deep) !important; }
html[data-theme="dark"] .review-item.expandable:hover { background: var(--surface-3) !important; }
html[data-theme="dark"] .faq-item { box-shadow: none !important; }

html[data-theme="dark"] .category-jump a {
  color: var(--text-dim) !important;
  background: rgba(31, 24, 17, 0.92) !important;
  border-color: var(--border-light) !important;
}

html[data-theme="dark"] .category-jump a:hover {
  color: var(--accent-bright) !important;
  background: var(--surface-3) !important;
}

html[data-theme="dark"] .tool-category {
  background: rgba(17, 13, 10, 0.76) !important;
}

html[data-theme="dark"] .tool-category[data-family="practice"] {
  --category: #ff6f32;
  --category-rgb: 255, 111, 50;
}

html[data-theme="dark"] .tool-category[data-family="fretboard"] {
  --category: #4fd1c5;
  --category-rgb: 79, 209, 197;
}

html[data-theme="dark"] .tool-category[data-family="harmony"] {
  --category: #aaa7ff;
  --category-rgb: 170, 167, 255;
}

html[data-theme="dark"] .tool-category[data-family="utility"] {
  --category: #63b3ed;
  --category-rgb: 99, 179, 237;
}

html[data-theme="dark"] .tool-card-featured {
  background:
    radial-gradient(circle at 88% 15%, rgba(212, 160, 76, 0.18), transparent 17rem),
    linear-gradient(135deg, #1b1510, #302319) !important;
  border-color: #59402a !important;
}

.tool-badge.featured,
.tool-card-featured .featured-cta {
  color: #1a1208 !important;
}

html[data-theme="dark"] .arcade-hub .hero {
  background: rgba(23, 17, 12, 0.72) !important;
  border-color: rgba(212, 160, 76, 0.22) !important;
}

/* Compact, accessible control mounted into every header. */
.theme-switch {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: auto !important;
  min-height: 36px;
  margin: 0 5px 0 0;
  padding: 5px 8px !important;
  color: var(--text-dim) !important;
  background: var(--surface-2) !important;
  border: 1px solid var(--border-light) !important;
  border-radius: 999px !important;
  box-shadow: none !important;
  cursor: pointer;
  font: 650 10px/1 var(--font-sans) !important;
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex: 0 0 auto;
}

.theme-switch:hover {
  color: var(--text) !important;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border-light)) !important;
  transform: none !important;
}

.theme-switch-track {
  position: relative;
  width: 31px;
  height: 18px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--border-light);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.18);
}

.theme-switch-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff7df;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.28);
  transition: transform 180ms ease, background-color 180ms ease;
}

html[data-theme="dark"] .theme-switch-knob {
  transform: translateX(13px);
  background: var(--accent-bright);
}

.theme-switch-light,
html[data-theme="dark"] .theme-switch-dark { color: var(--text) !important; }

.theme-switch-dark,
html[data-theme="dark"] .theme-switch-light { color: var(--text-faint) !important; }

@media (max-width: 680px) {
  .theme-switch { order: -1; }
  .theme-switch-label { display: none; }
  .theme-switch { padding-inline: 7px !important; }
}

@media (prefers-reduced-motion: reduce) {
  .theme-switch-knob { transition: none; }
}