/* ---------- Theme tokens ---------- */
:root {
  --accent: #4a90e2;
  --accent-strong: #2a6cb8;
  --accent-text: #ffffff;
}

:root[data-theme="light"] {
  --bg: #f4f5f7;
  --text: #2c2c2a;
  --text-muted: #5f5e5a;
  --text-subtle: #888780;

  --card: #e5e7eb;
  --border: #d1d5db;
  --border-strong: #9ca3af;

  --kb-frame: #d1d5db;
  --kb-frame-border: #9ca3af;
  --key-bg: #ffffff;
  --key-text: #4b5563;
  --key-border: #d1d5db;
  --key-hover: #f9fafb;
  --key-mod-bg: #e5e7eb;
  --key-mod-text: #4b5563;
  --key-mod-hover: #d1d5db;

  --success-bg: #97c459;
  --success-bg-soft: #eaf3de;
  --success-text: #27500a;
  --success-border: #97c459;

  --danger-bg: #f09595;
  --danger-text-on: #ffffff;
  --danger-border: #c46060;

  --pill-active-bg: #4b5563;
  --pill-active-text: #ffffff;

  --hand-base: rgba(156, 163, 175, 0.65);
}

:root[data-theme="dark"] {
  --bg: #05060f;
  --text: #f4f5fb;
  --text-muted: #a0aec0;
  --text-subtle: #8290a8;

  --card: #111423;
  --border: #272b3c;
  --border-strong: #434b63;

  --kb-frame: #101322;
  --kb-frame-border: #252b40;
  --key-bg: #1b2033;
  --key-text: #e2e8f0;
  --key-border: #30384e;
  --key-hover: #2b334b;
  --key-mod-bg: #151a2a;
  --key-mod-text: #a0aec0;
  --key-mod-hover: #252b40;

  --success-bg: #6fa432;
  --success-bg-soft: #173404;
  --success-text: #c0dd97;
  --success-border: #3b6d11;

  --danger-bg: #c46060;
  --danger-text-on: #ffffff;
  --danger-border: #791f1f;

  --pill-active-bg: #f4f5fb;
  --pill-active-text: #05060f;

  --hand-base: rgba(120, 115, 110, 0.5);
  color-scheme: dark;
  --night-background: radial-gradient(circle at center 40%, #0d1126 0%, #05060f 100%);
}

* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}

/* --- Splash Screen --- */
.splash-screen {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: var(--bg); display: flex; flex-direction: column;
  justify-content: center; align-items: center; z-index: 9999;
  transition: opacity 0.6s ease-out, visibility 0.6s ease-out;
}
.splash-screen.hidden { opacity: 0; visibility: hidden; }
.splash-content { text-align: center; animation: smoothPulse 2.5s infinite ease-in-out; }
.splash-logo { width: 120px; height: auto; margin-bottom: 16px; border-radius: 12px; }
.splash-title { font-size: 24px; font-weight: 600; color: var(--text); margin: 0; letter-spacing: -0.5px; }
@keyframes smoothPulse {
  0% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.03); opacity: 1; }
  100% { transform: scale(1); opacity: 0.9; }
}

/* ==========================================================
   MODE SELECTION SCREEN
   ========================================================== */
.mode-selection-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(circle at center 40%, #0d1126 0%, #05060f 100%);
  z-index: 5000; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: white; opacity: 1; transition: opacity 0.5s ease, visibility 0.5s;
}
.mode-selection-overlay.hidden { opacity: 0; pointer-events: none; visibility: hidden; }

.mode-selection-content { text-align: center; max-width: 1000px; padding: 20px; }
.mode-selection-content h2 { font-size: 48px; font-weight: 700; margin: 0 0 16px 0; text-shadow: 0 0 20px rgba(255,255,255,0.2); }
.mode-selection-content p { font-size: 18px; color: #a0aec0; margin: 0 0 48px 0; }

.mode-cards { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }

.mode-card-btn {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px; padding: 32px 24px; width: 280px; text-align: left;
  color: white; cursor: pointer; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s, border-color 0.2s;
  display: flex; flex-direction: column; align-items: flex-start;
}
.mode-card-btn:hover {
  background: rgba(255,255,255,0.08); transform: translateY(-6px);
  border-color: var(--accent); box-shadow: 0 15px 35px rgba(0,0,0,0.4);
}
.mode-card-btn .mode-icon { margin-bottom: 20px; color: var(--accent); display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: rgba(255,255,255,0.05); border-radius: 12px; }
.mode-card-btn h3 { margin: 0 0 12px 0; font-size: 24px; font-weight: 600; color: white; }
.mode-card-btn p { margin: 0; color: #cbd5e1; font-size: 14px; line-height: 1.6; font-weight: 400; text-align: left;}

/* --- Layout (Grid System) --- */
.app-layout {
  display: grid; grid-template-columns: 240px 1fr 180px;
  gap: 32px; max-width: 1200px; margin: 0 auto; align-items: start;
  transition: grid-template-columns 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar Collapse States */
@media (min-width: 901px) {
  .app-layout.sidebar-closed { grid-template-columns: 0px 1fr 180px; }
}
@media (max-width: 900px) { 
  .app-layout { grid-template-columns: 1fr; } 
  .app-layout.sidebar-closed .sidebar-left { display: none; }
}

.main-content { position: relative; }

/* Focus & Results Mode Transitions */
.sidebar-left, .sidebar-right, .workspace, .top-toolbar, .pattern-dashboard { 
  transition: opacity 0.5s ease, transform 0.3s ease; 
}

/* Keep navigation readable and interactive while typing. */

/* Hide everything behind the dark overlay */
body.showing-results .sidebar-left,
body.showing-results .sidebar-right,
body.showing-results .workspace,
body.showing-results .top-toolbar,
body.showing-results .pattern-dashboard { 
  opacity: 0; pointer-events: none; 
}

/* Hide Left Sidebar when collapsed */
.sidebar-left { min-width: 0; overflow: hidden; }
.app-layout.sidebar-closed .sidebar-left { opacity: 0 !important; pointer-events: none; transform: translateX(-10px); }

/* Utility for Disabled States (Beginner & Inter Modes) */
.disabled-ui {
  opacity: 0.4 !important;
  pointer-events: none !important;
  cursor: not-allowed !important;
}

/* --- LEFT SIDEBAR (ACCORDION MENU) --- */
.nav-group { margin-bottom: 8px; }
.nav-header {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px; background: transparent; border: none; border-radius: 8px;
  color: var(--text); font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background 0.2s, color 0.2s; font-family: inherit;
}
.nav-header:hover { background: var(--card); }
.nav-header.active { color: var(--accent); }
.nav-header .chevron { width: 18px; height: 18px; transition: transform 0.3s ease; color: var(--text-muted); }
.nav-header.expanded .chevron { transform: rotate(180deg); }

.nav-content {
  display: none; flex-direction: column; gap: 12px; padding: 12px 16px; 
  border-left: 2px solid var(--border); margin-left: 24px; margin-top: 4px;
}
.nav-content.expanded { display: flex; }

.course-selector {
  padding: 8px 12px; font-size: 14px; border: 1px solid var(--border-strong);
  border-radius: 8px; background-color: var(--bg); color: var(--text);
  font-family: inherit; cursor: pointer; outline: none; width: 100%; 
  transition: border-color 0.2s;
}
.course-selector:hover:not(:disabled), .course-selector:focus:not(:disabled) { border-color: var(--accent); }

.lesson-info { margin-bottom: 8px; white-space: nowrap;}
.lesson-title { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.lesson-meta { font-size: 12px; color: var(--text-muted); }

.level-pills { display: flex; flex-direction: column; gap: 8px; white-space: nowrap;}
.level-pill { 
  font-size: 13px; padding: 10px 14px; border-radius: 8px; color: var(--text-muted); 
  text-align: left; background: var(--card); border: 1px solid var(--border);
  cursor: pointer; font-family: inherit; transition: background 0.15s, border-color 0.15s;
}
.level-pill:hover:not(.disabled-ui):not(.active):not(.completed) { background: var(--bg); }
.level-pill.active { background: var(--pill-active-bg); color: var(--pill-active-text); border-color: var(--pill-active-bg); }
.level-pill.completed { background: var(--success-bg-soft); color: var(--success-text); border-color: var(--success-border); }

/* --- RIGHT SIDEBAR --- */
.sidebar-right { display: flex; flex-direction: column; gap: 16px; }
.stat-card { background: var(--card); border-radius: 8px; padding: 16px; display: flex; flex-direction: column; justify-content: center; }
.stat-label { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px;}
.stat-value { font-size: 28px; font-weight: 500; line-height: 1; }
.stat-suffix { color: var(--text-subtle); font-size: 15px; font-weight: 400; }

.color-picker { display: flex; gap: 8px; margin-top: 10px; }
.color-swatch { 
  width: 24px; height: 24px; border-radius: 50%; cursor: pointer; 
  border: 2px solid transparent; transition: transform 0.15s, border-color 0.15s; 
}
.color-swatch:hover { transform: scale(1.1); }
.color-swatch.active { border-color: var(--text); box-shadow: 0 0 0 2px var(--bg) inset; }

/* --- MAIN CONTENT AREA --- */
.top-toolbar { display: flex; justify-content: space-between; margin-bottom: 24px; align-items: center;}
.toolbar-actions { display: flex; gap: 8px;}

.icon-btn, .ctrl-btn {
  border: 0.5px solid var(--border); border-radius: 8px; background: transparent; color: var(--text);
  cursor: pointer; font-family: inherit; transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.icon-btn { font-size: 13px; padding: 6px 10px; display: flex; align-items: center; gap: 6px; width: 100px; justify-content: center;}
.icon-btn.auto-width { width: auto; padding: 6px 10px; }
.icon-btn:hover:not(.disabled-ui), .ctrl-btn:hover:not(.disabled-ui) { background: var(--card); }
.icon svg { display: block; width: 16px; height: 16px; }

/* ==========================================================
   NEON GLASSMORPHISM RESULTS OVERLAY
   ========================================================== */
.results-overlay {
  position: fixed; 
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at center 40%, #0d1126 0%, #05060f 100%);
  color: #ffffff;
  z-index: 1000;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  opacity: 1; transition: opacity 0.4s ease, visibility 0.4s;
  overflow-y: auto;
  padding: 20px;
}
.results-overlay.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.results-content { max-width: 900px; width: 100%; display: flex; flex-direction: column; align-items: center; }
.results-title { font-size: 56px; font-weight: 700; margin: 0 0 8px 0; letter-spacing: -1px; text-shadow: 0 0 20px rgba(255,255,255,0.2); }
.results-subtitle-wrapper { display: flex; align-items: center; gap: 20px; margin-bottom: 50px; width: 100%; max-width: 600px; }
.results-subtitle-wrapper .line { height: 1px; flex-grow: 1; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent); }
.results-message { font-size: 16px; color: #a0aec0; font-weight: 400; margin: 0; text-align: center; }

/* 3-Column Grid */
.stats-grid { display: flex; justify-content: center; align-items: center; gap: 40px; margin-bottom: 60px; width: 100%; }
.grid-col { display: flex; flex-direction: column; gap: 24px; width: 260px; }
.center-col { width: auto; align-items: center; justify-content: center; }

/* Glass Cards */
.glass-card { background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 16px; padding: 20px; display: flex; align-items: center; gap: 16px; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2); transition: transform 0.2s, background 0.2s, box-shadow 0.2s; }
button.glass-card { cursor: pointer; width: 100%; text-align: left; color: white; font-family: inherit; }
button.glass-card:hover { background: rgba(255, 255, 255, 0.06); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3); }

.card-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: bold; background: rgba(255,255,255,0.05); }
.card-icon.blue-glow { color: #3b82f6; box-shadow: inset 0 0 15px rgba(59, 130, 246, 0.2); }
.card-icon.purple-glow { color: #a855f7; box-shadow: inset 0 0 15px rgba(168, 85, 247, 0.2); }
.card-icon.green-glow { color: #10b981; box-shadow: inset 0 0 15px rgba(16, 185, 129, 0.2); }
.card-icon.no-bg { background: transparent; font-size: 24px; }

.card-text { display: flex; flex-direction: column; }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.card-sub { font-size: 12px; color: #94a3b8; }

.glass-card .stat-label { font-size: 12px; font-weight: 600; color: #cbd5e1; letter-spacing: 1px; margin-bottom: 2px;}
.glass-card .stat-value { font-size: 32px; font-weight: 400; color: white; line-height: 1; display:flex; align-items:baseline;}
.glass-card .stat-unit { font-size: 14px; color: #94a3b8; margin-left: 4px; }

.btn-next-level { background: linear-gradient(135deg, #3b82f6, #8b5cf6); border: none; padding: 20px 24px; box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4); position: relative; overflow: hidden; }
.btn-next-level::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent); pointer-events: none; }
.btn-next-level:hover { background: linear-gradient(135deg, #4f46e5, #9333ea); box-shadow: 0 15px 40px rgba(99, 102, 241, 0.6); }
.btn-next-level .card-title { font-size: 18px; margin-bottom: 0;}

/* Center Accuracy Circle & Pedestal */
.accuracy-container { display: flex; flex-direction: column; align-items: center; position: relative; }
.glow-circle { width: 260px; height: 260px; border-radius: 50%; z-index: 5; display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative; background: #05060f; }
.glow-circle::before { content: ''; position: absolute; top: -4px; left: -4px; right: -4px; bottom: -4px; border-radius: 50%; z-index: -1; background: linear-gradient(135deg, #00f0ff, #8a2be2); box-shadow: 0 0 50px rgba(0, 240, 255, 0.3); }
.glow-circle .stat-label { font-size: 16px; color: #cbd5e1; letter-spacing: 2px; font-weight: 600; margin-bottom: -5px;}
.glow-circle .stat-value { font-size: 96px; font-weight: 300; line-height: 1; display:flex; align-items:baseline; transition: color 0.3s;}
.glow-circle .stat-value { color: var(--accent); }
.glow-circle .stat-unit { font-size: 24px; color: #94a3b8; margin-left: 8px;}

.pedestal { margin-top: -30px; position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.pedestal-top { width: 340px; height: 80px; border-radius: 50%; background: radial-gradient(ellipse at center, #1e1e38 0%, #0a0a1a 80%); border: 2px solid rgba(255,255,255,0.05); box-shadow: 0 -15px 40px rgba(0, 240, 255, 0.15); }
.pedestal-base { width: 360px; height: 60px; border-radius: 50%; background: #060713; margin-top: -50px; border: 1px solid rgba(255,255,255,0.02); box-shadow: 0 20px 50px rgba(0,0,0,0.5); }

.bottom-banner { width: 100%; max-width: 900px; background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.05); border-radius: 16px; padding: 20px 30px; display: flex; justify-content: space-between; align-items: center; }
.banner-left, .banner-right { display: flex; align-items: center; gap: 16px; }
.banner-right { text-align: right; }
.banner-icon { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; background: rgba(255,255,255,0.05); }
.banner-icon.gold-glow { color: #fbbf24; box-shadow: inset 0 0 15px rgba(251, 191, 36, 0.2); }
.banner-text { display: flex; flex-direction: column; }
.banner-title { font-size: 15px; font-weight: 600; color: #f8fafc; }
.banner-sub { font-size: 13px; color: #94a3b8; }

@media (max-width: 900px) {
  .stats-grid { flex-direction: column; gap: 60px; }
  .grid-col { width: 100%; max-width: 350px; }
  .center-col { order: -1; margin-bottom: 20px; }
  .bottom-banner { flex-direction: column; gap: 20px; text-align: left; }
  .banner-right { text-align: left; width: 100%; justify-content: flex-start;}
}

/* Pattern Display */
.pattern-dashboard { background: var(--card); border-radius: 8px; padding: 16px; margin-bottom: 24px; display: flex; flex-direction: column; gap: 12px; }
.pattern-header { display: flex; justify-content: space-between; align-items: flex-end; }
.pattern-rep { color: var(--text-subtle); font-size: 12px; margin-bottom: 4px; }

#pattern-display { transition: opacity 0.2s ease-in-out; background: var(--bg); padding: 24px 16px; border-radius: 6px; text-align: center; }
#pattern-display.hidden { opacity: 0; pointer-events: none; }

@keyframes cursorBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.pattern-letter { position: relative; display: inline-block; font-size: 28px; font-weight: 500; letter-spacing: 5px; color: var(--text-subtle); transition: color 0.15s; }
.pattern-letter.done { color: var(--success-text); }
.pattern-letter.current { color: var(--text); }
.pattern-letter.current::after { content: ''; position: absolute; left: 0; bottom: -4px; width: calc(100% - 5px); height: 3px; background-color: var(--accent); border-radius: 2px; animation: cursorBlink 1s step-end infinite; }

.toggle-switch { position: relative; display: inline-block; width: 32px; height: 18px; margin-left: 8px; vertical-align: middle;}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border-strong); transition: .2s; border-radius: 18px; }
.slider:before { position: absolute; content: ""; height: 14px; width: 14px; left: 2px; bottom: 2px; background-color: var(--key-bg); transition: .2s; border-radius: 50%; }
input:checked + .slider { background-color: var(--accent); }
input:checked + .slider:before { transform: translateX(14px); background-color: var(--accent-text); }

/* Workspace & Hands Overlay */
.workspace { position: relative; margin-bottom: 24px; overflow: visible; display: flex; justify-content: center;}
.hand-svg { position: absolute; top: 0; left: 0; width: 240px; height: 300px; z-index: 10; pointer-events: none; transition: transform 0.05s linear; }
.hand-svg path, .hand-svg rect { fill: var(--hand-base); transition: fill 0.2s ease, transform 0.1s ease; }
.hand-svg .finger.active { fill: var(--accent); opacity: 0.85; }
.hand-svg .finger.pressed { transform: translateY(6px); }

/* Keyboard */
.keyboard {
  background: var(--kb-frame); padding: 8px; border-radius: 14px;
  box-shadow: inset 0 0 0 1px var(--kb-frame-border); transition: background 0.3s;
  width: 100%; max-width: 620px;
}
.kb-row { display: flex; gap: 4px; margin-bottom: 4px; justify-content: center; }
.kb-row:last-child { margin-bottom: 0; }
.key {
  height: 42px; min-width: 32px; flex: 1 1 36px; border: 1px solid var(--key-border); border-radius: 6px;
  background: var(--key-bg); color: var(--key-text); font-size: 13px; font-weight: 400; font-family: inherit;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s, opacity 0.15s, transform 0.05s;
  user-select: none; padding: 0; position: relative;
}
.key:hover:not(.dimmed) { background: var(--key-hover); }
.key:active { transform: translateY(1px); }
.key.w-15 { flex-basis: 54px; max-width: 70px; } 
.key.w-175 { flex-basis: 64px; max-width: 85px; }
.key.w-2 { flex-basis: 74px; max-width: 100px; }
.key.w-225 { flex-basis: 84px; max-width: 110px; }
.key.w-275 { flex-basis: 100px; max-width: 130px; }
.key.space { flex-basis: 220px; max-width: 380px; }
.key.modifier { background: var(--key-mod-bg); color: var(--key-mod-text); font-size: 11px; }
.key.modifier:hover:not(.dimmed) { background: var(--key-mod-hover); }
.key.dimmed { opacity: 0.45; cursor: not-allowed; }
.key.in-lesson { color: var(--key-text); opacity: 0.85; }
.key.target { background: var(--accent); color: var(--accent-text); border-color: var(--accent-strong); font-weight: 500; opacity: 1; }
.key.flash-correct { background: var(--success-bg); color: var(--accent-text); border-color: var(--success-border); }
.key.flash-wrong { background: var(--danger-bg); color: var(--danger-text-on); border-color: var(--danger-border); }
.key.hint { background: var(--accent); color: var(--accent-text); border-color: var(--accent-strong); }

.controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; border-top: 1px solid var(--border); padding-top: 16px; justify-content: center;}
.status { font-size: 13px; color: var(--text-muted); margin-left: 8px; }

:root[data-theme="dark"] body{background:var(--night-background);background-attachment:fixed;min-height:100vh}
:root[data-theme="dark"] .splash-screen{background:var(--night-background)}

/* Results follow the selected Light theme, including readable statistics. */
:root[data-theme="light"] .results-overlay{background:var(--bg);color:var(--text)}
:root[data-theme="light"] .results-title{text-shadow:none}
:root[data-theme="light"] .results-overlay .glass-card,
:root[data-theme="light"] .results-overlay .bottom-banner{background:#fff;border-color:var(--border);color:var(--text);box-shadow:0 8px 24px rgba(30,41,59,.08)}
:root[data-theme="light"] .results-overlay button.glass-card:hover{background:var(--card)}
:root[data-theme="light"] .results-overlay .stat-value,
:root[data-theme="light"] .results-overlay .banner-title{color:var(--text)}
:root[data-theme="light"] .results-overlay .results-message,
:root[data-theme="light"] .results-overlay .card-sub,
:root[data-theme="light"] .results-overlay .stat-label,
:root[data-theme="light"] .results-overlay .stat-unit,
:root[data-theme="light"] .results-overlay .banner-sub{color:var(--text-muted)}
:root[data-theme="light"] .results-overlay .glow-circle{background:#fff;border-color:var(--accent)}
:root[data-theme="light"] .results-overlay .pedestal-top{background:radial-gradient(ellipse at center,#e2e8f0,#f4f5f7);border-color:var(--border);box-shadow:none}
:root[data-theme="light"] .results-overlay .pedestal-base{background:#e5e7eb;border-color:var(--border);box-shadow:0 12px 24px #0000000a}
:root[data-theme="light"] .results-overlay .line{background:linear-gradient(90deg,transparent,var(--border),transparent)}
:root[data-theme="light"] .results-overlay .btn-next-level{border:1px solid var(--accent);background:color-mix(in srgb,var(--accent) 12%,white)}
:root[data-theme="light"] .results-overlay .btn-next-level:hover{background:color-mix(in srgb,var(--accent) 22%,white)}

/* First visits default to Light; the mode picker follows the chosen theme. */
:root[data-theme="light"] .mode-selection-overlay { background: var(--bg); color: var(--text); }
:root[data-theme="light"] .mode-selection-content h2 { text-shadow: none; }
:root[data-theme="light"] .mode-selection-content p { color: var(--text-muted); }
:root[data-theme="light"] .mode-card-btn { background: #fff; border-color: var(--border); color: var(--text); box-shadow: 0 6px 20px rgba(30,41,59,.06); }
:root[data-theme="light"] .mode-card-btn h3 { color: var(--text); }
:root[data-theme="light"] .mode-card-btn .mode-icon { background: var(--card); }
:root[data-theme="light"] .mode-card-btn:hover { background: var(--card); border-color: var(--accent); box-shadow: 0 12px 28px rgba(30,41,59,.12); }
.mode-card-btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

/* All decorative highlights follow the color selected in Settings. */
:root { accent-color: var(--accent); }
::selection { background: var(--accent-strong); color: #fff; }
.card-icon.blue-glow, .card-icon.purple-glow, .card-icon.green-glow, .banner-icon.gold-glow {
  color: var(--accent); box-shadow: inset 0 0 15px color-mix(in srgb,var(--accent) 20%,transparent);
}
.results-overlay .btn-next-level { background: var(--accent-strong); box-shadow: 0 10px 30px color-mix(in srgb,var(--accent) 25%,transparent); }
.results-overlay .btn-next-level:hover { background: var(--accent-strong); box-shadow: 0 15px 35px color-mix(in srgb,var(--accent) 40%,transparent); }
.results-overlay button.glass-card:hover { border-color: var(--accent); }
.results-overlay .glow-circle { border-color: var(--accent); }
.icon-btn:hover { border-color: var(--accent); background: color-mix(in srgb,var(--accent) 12%,var(--bg)); }
.mode-card-btn:hover { border-color: var(--accent); }
:root[data-theme="light"] .mode-card-btn:hover { background: color-mix(in srgb,var(--accent) 10%,var(--bg)); }

/* Black uses a neutral light highlight on dark surfaces for contrast. */
:root[data-theme="dark"][data-accent="black"] { --accent: #a1a1aa !important; }