/* AccentNinja — Design System
 * Mobile-first, dark/light themes via [data-theme] on <html>.
 * No framework, no build step. All CSS custom properties.
 */

/* ===========================================================================
   1. Design Tokens
   =========================================================================== */

:root {
  /* --- Colours (dark theme default) --- */
  --color-bg:           #0f172a;
  --color-surface:      #1e293b;
  --color-surface-2:    #334155;
  --color-surface-3:    #475569;
  --color-border:       #334155;
  --color-border-subtle:#1e293b;

  --color-text:         #f1f5f9;
  --color-text-muted:   #94a3b8;
  --color-text-subtle:  #64748b;

  --color-primary:      #6366f1;
  --color-primary-hover:#818cf8;
  --color-primary-dim:  #312e81;
  --color-primary-text: #ffffff;

  --color-success:      #22c55e;
  --color-success-bg:   #14532d;
  --color-warning:      #f59e0b;
  --color-warning-bg:   #451a03;
  --color-error:        #ef4444;
  --color-error-bg:     #450a0a;
  --color-info:         #38bdf8;

  /* Score colour bands */
  --color-score-excellent: #22c55e;
  --color-score-good:      #84cc16;
  --color-score-fair:      #f59e0b;
  --color-score-poor:      #ef4444;

  /* --- Typography --- */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;

  --leading-tight:  1.25;
  --leading-normal: 1.5;

  /* --- Spacing --- */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* --- Layout --- */
  --max-width:     480px;
  --header-height: 56px;
  --radius-sm:     0.375rem;
  --radius-md:     0.5rem;
  --radius-lg:     0.75rem;
  --radius-xl:     1rem;
  --radius-2xl:    1.5rem;
  --radius-full:   9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.6);

  /* --- Transitions --- */
  --transition-fast:   120ms ease;
  --transition-normal: 200ms ease;
  --transition-slow:   350ms ease;
}

[data-theme="light"] {
  --color-bg:           #f8fafc;
  --color-surface:      #ffffff;
  --color-surface-2:    #f1f5f9;
  --color-surface-3:    #e2e8f0;
  --color-border:       #e2e8f0;
  --color-border-subtle:#f1f5f9;

  --color-text:         #0f172a;
  --color-text-muted:   #475569;
  --color-text-subtle:  #94a3b8;

  --color-primary-dim:  #e0e7ff;
  --color-success-bg:   #f0fdf4;
  --color-warning-bg:   #fffbeb;
  --color-error-bg:     #fef2f2;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
}

/* ============================================================
   Japan / Fruit Ninja Theme
   Dark ink + torii red + sakura pink + bamboo green
   ============================================================ */

[data-theme="japan"] {
  /* --- Backgrounds: deep ink black with crimson undertone --- */
  --color-bg:           #0d0508;
  --color-surface:      #1a0c12;
  --color-surface-2:    #2a1520;
  --color-surface-3:    #3e1f2e;
  --color-border:       #5e2d40;
  --color-border-subtle:#1a0c12;

  /* --- Text: cherry blossom pale --- */
  --color-text:         #ffedf2;
  --color-text-muted:   #d48498;
  --color-text-subtle:  #9e5a6e;

  /* --- Primary: torii red --- */
  --color-primary:      #e8274f;
  --color-primary-hover:#ff4d70;
  --color-primary-dim:  #3d0a1a;
  --color-primary-text: #ffffff;

  /* --- Status: fruit-ninja vivid palette --- */
  --color-success:      #27ae60;   /* kiwi green */
  --color-success-bg:   #0a2018;
  --color-warning:      #e67e22;   /* mango orange */
  --color-warning-bg:   #2a1200;
  --color-error:        #e74c3c;   /* watermelon red */
  --color-error-bg:     #2a0808;
  --color-info:         #3498db;   /* blueberry blue */

  /* --- Score bands --- */
  --color-score-excellent: #27ae60;  /* kiwi */
  --color-score-good:      #f1c40f;  /* star fruit */
  --color-score-fair:      #e67e22;  /* mango */
  --color-score-poor:      #e74c3c;  /* watermelon */

  /* --- Dramatic shadows with crimson glow --- */
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.7);
  --shadow-md: 0 4px 12px rgba(232,39,79,0.15), 0 2px 8px rgba(0,0,0,0.6);
  --shadow-lg: 0 8px 24px rgba(232,39,79,0.2),  0 4px 16px rgba(0,0,0,0.75);
}

/* --- Splash screen: rising sun atmosphere --- */
[data-theme="japan"] #screen-splash {
  background:
    radial-gradient(circle at 50% 42%, rgba(232,39,79,0.18) 0%, transparent 50%),
    radial-gradient(circle at 50% 42%, rgba(232,39,79,0.08) 0%, transparent 70%),
    var(--color-bg);
  overflow: hidden;
}

/* Rising sun glow disc behind the logo */
[data-theme="japan"] .splash-content {
  position: relative;
  z-index: 1;
}
[data-theme="japan"] .splash-content::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,39,79,0.22) 0%, rgba(232,39,79,0.06) 55%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, calc(-50% - 20px));
  pointer-events: none;
  z-index: -1;
}

/* Sakura petal 1 (top-left) */
[data-theme="japan"] #screen-splash::before {
  content: '';
  position: absolute;
  width: 13px;
  height: 18px;
  background: rgba(232,39,79,0.5);
  border-radius: 50% 50% 50% 50% / 30% 30% 70% 70%;
  top: 12%;
  left: 18%;
  transform: rotate(-30deg);
  animation: sakuraDrift1 9s ease-in-out infinite;
  pointer-events: none;
}

/* Sakura petal 2 (top-right) */
[data-theme="japan"] #screen-splash::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 14px;
  background: rgba(255,77,112,0.45);
  border-radius: 50% 50% 50% 50% / 30% 30% 70% 70%;
  top: 18%;
  right: 22%;
  transform: rotate(45deg);
  animation: sakuraDrift2 11s ease-in-out infinite 2.5s;
  pointer-events: none;
}

@keyframes sakuraDrift1 {
  0%   { transform: rotate(-30deg)  translateY(0)    translateX(0);    opacity: 0.55; }
  25%  { transform: rotate(-18deg)  translateY(35px)  translateX(18px);  opacity: 0.7; }
  55%  { transform: rotate(-38deg)  translateY(85px)  translateX(-12px); opacity: 0.45; }
  80%  { transform: rotate(-12deg)  translateY(140px) translateX(22px);  opacity: 0.25; }
  100% { transform: rotate(-30deg)  translateY(200px) translateX(8px);   opacity: 0; }
}

@keyframes sakuraDrift2 {
  0%   { transform: rotate(45deg)  translateY(0)    translateX(0);    opacity: 0.4; }
  30%  { transform: rotate(58deg)  translateY(45px)  translateX(-22px); opacity: 0.6; }
  65%  { transform: rotate(38deg)  translateY(100px) translateX(12px);  opacity: 0.35; }
  100% { transform: rotate(62deg)  translateY(190px) translateX(-18px); opacity: 0; }
}

/* Tint the SVG logo toward red */
[data-theme="japan"] .splash-logo {
  filter: hue-rotate(130deg) brightness(0.9);
}

/* --- Header: subtle crimson bottom border + dark gradient --- */
[data-theme="japan"] .app-header {
  border-bottom-color: rgba(232,39,79,0.35);
  background: linear-gradient(180deg, rgba(13,5,8,0.98) 0%, rgba(26,12,18,0.98) 100%);
}

/* --- Primary button: torii-red gradient with slash-shine effect --- */
[data-theme="japan"] .btn-primary {
  background: linear-gradient(135deg, #e8274f 0%, #c01e3e 100%);
  box-shadow: 0 2px 12px rgba(232,39,79,0.4);
  overflow: hidden;
  position: relative;
}
[data-theme="japan"] .btn-primary::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -110%;
  width: 55%;
  height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
  pointer-events: none;
}
[data-theme="japan"] .btn-primary:hover {
  background: linear-gradient(135deg, #ff4d70 0%, #e8274f 100%);
  box-shadow: 0 4px 20px rgba(232,39,79,0.55);
}
[data-theme="japan"] .btn-primary:hover::after {
  left: 150%;
}

/* --- Level cards: crimson glow on hover --- */
[data-theme="japan"] .level-card:hover,
[data-theme="japan"] .quick-start-card:hover {
  border-color: rgba(232,39,79,0.5);
  box-shadow: 0 0 18px rgba(232,39,79,0.18);
}

/* --- Settings section: subtle left accent border --- */
[data-theme="japan"] .settings-section {
  border-left: 3px solid rgba(232,39,79,0.3);
  padding-left: calc(var(--space-4) - 3px);
}

/* ===========================================================================
   2. Reset & Base
   =========================================================================== */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: var(--leading-normal);
  /* iOS safe areas */
  padding-top: env(safe-area-inset-top);
}

body {
  min-height: 100dvh;
  background: var(--color-bg);
  overflow-x: hidden;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { display: block; max-width: 100%; }

button { cursor: pointer; border: none; background: none; font: inherit; }
input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===========================================================================
   3. App Shell & Screen System
   =========================================================================== */

#app {
  position: relative;
  width: 100%;
  min-height: 100dvh;
}

.screen {
  display: none;
  flex-direction: column;
  width: 100%;
  min-height: 100dvh;
  animation: screenIn var(--transition-normal) ease;
}

.screen.active {
  display: flex;
}

@keyframes screenIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scrollable main content below fixed header */
.screen-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--header-height) var(--space-4) 0;
  padding-bottom: env(safe-area-inset-bottom, var(--space-8));
}

/* ===========================================================================
   4. Header / Navigation
   =========================================================================== */

.app-header {
  position: fixed;
  top: env(safe-area-inset-top, 0);
  left: 0; right: 0;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  gap: var(--space-3);
  z-index: 100;
  /* constrain to max-width but stay full bleed */
}

.header-title {
  font-size: var(--text-lg);
  font-weight: 700;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ===========================================================================
   5. Buttons
   =========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  transition: background var(--transition-fast), color var(--transition-fast),
              opacity var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

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

.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-surface-3); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { background: var(--color-surface-2); color: var(--color-text); }

.btn-text {
  background: transparent;
  color: var(--color-primary);
  padding: var(--space-3) var(--space-4);
}
.btn-text:hover { color: var(--color-primary-hover); }

.btn-danger {
  background: var(--color-error);
  color: #fff;
}
.btn-danger:hover { filter: brightness(1.1); }

.btn-full { width: 100%; }

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* Icon button — square, no label */
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}
.btn-icon:hover { background: var(--color-surface-2); color: var(--color-text); }

/* ===========================================================================
   6. Form Controls
   =========================================================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  outline: none;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
}

/* ===========================================================================
   7. Toggle Group (two-option selector)
   =========================================================================== */

.toggle-group {
  display: flex;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  gap: var(--space-1);
}

.toggle-option {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast);
  text-align: center;
  line-height: var(--leading-tight);
}

.toggle-option:hover {
  color: var(--color-text);
}

.toggle-option.active {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* ===========================================================================
   8. Cards & Sections
   =========================================================================== */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}

.settings-section {
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.settings-section:last-of-type {
  border-bottom: none;
}

.settings-section-title {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ===========================================================================
   9. Badges & Chips
   =========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.4;
}

.badge-primary { background: var(--color-primary-dim); color: var(--color-primary-hover); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-error   { background: var(--color-error-bg);   color: var(--color-error); }
.badge-muted   { background: var(--color-surface-2);  color: var(--color-text-muted); }

/* Online/offline dot */
.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: var(--radius-full);
}
.status-dot--online  { background: var(--color-success); }
.status-dot--offline { background: var(--color-error); }

/* ===========================================================================
   10. Splash Screen
   =========================================================================== */

#screen-splash {
  position: relative;
  background: #0a0a0f;
  overflow: hidden;
  animation: splashFade 0.4s ease;
}

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

.splash-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.splash-loader {
  position: absolute;
  bottom: env(safe-area-inset-bottom, 0);
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-8);
}

.splash-subtitle {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}

.splash-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===========================================================================
   11. Setup / Onboarding Screen
   =========================================================================== */

#screen-setup {
  align-items: center;
  justify-content: center;
}

.setup-main {
  width: 100%;
  max-width: var(--max-width);
  padding: var(--space-8) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.setup-hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.setup-logo-large {
  font-size: 72px;
  line-height: 1;
}

.setup-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.setup-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 300px;
}

.setup-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.setup-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
}

.setup-info {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

.setup-link {
  font-size: var(--text-sm);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.setup-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
}

/* ===========================================================================
   12. Home Screen
   =========================================================================== */

.home-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.home-section-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-2);
}

.level-card {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: background var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.level-card:active { transform: scale(0.95); }

.level-card--locked {
  opacity: 0.5;
  cursor: default;
}
.level-card--locked:active { transform: none; }

.level-card--active {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}

.level-card--complete {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}

.level-number {
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: 1;
}

.level-icon {
  font-size: var(--text-xs);
}

.level-stars {
  display: flex;
  gap: 1px;
  font-size: 8px;
}

/* Persistent completion counter badge — top-right of the level card */
.level-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 16px;
  padding: 0 5px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  line-height: 16px;
  text-align: center;
  letter-spacing: 0.02em;
}

/* Best-score caption under the level name */
.level-best {
  font-size: 8px;
  font-weight: 700;
  color: var(--color-success, var(--color-primary));
  letter-spacing: 0.02em;
  line-height: 1;
}

/* Quick start button */
.quick-start-card {
  background: linear-gradient(135deg, var(--color-primary-dim), var(--color-surface));
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: filter var(--transition-fast);
}
.quick-start-card:hover { filter: brightness(1.1); }

/* ===========================================================================
   13. Settings Screen
   =========================================================================== */

.settings-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) var(--space-16);
}

.settings-body {
  display: flex;
  flex-direction: column;
}

.azure-settings-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow: hidden;
  transition: max-height var(--transition-slow), opacity var(--transition-normal),
              padding var(--transition-slow), margin var(--transition-slow);
}

.azure-settings-section.hidden {
  max-height: 0 !important;
  opacity: 0;
  pointer-events: none;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 0;
  margin-bottom: 0;
}

.connection-status {
  font-size: var(--text-sm);
  font-weight: 500;
  min-height: var(--text-sm);
  transition: color var(--transition-fast);
}

.connection-status--ok   { color: var(--color-success); }
.connection-status--fail { color: var(--color-error); }

/* ===========================================================================
   12b. Level-0 card on Home screen
   =========================================================================== */

.level0-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  background: linear-gradient(135deg, var(--color-primary-dim) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  text-align: left;
  transition: filter var(--transition-fast), transform var(--transition-fast);
}
.level0-card:hover  { filter: brightness(1.1); }
.level0-card:active { transform: scale(0.98); }

.level0-icon { font-size: 28px; flex-shrink: 0; }

.level0-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.level0-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}

.level0-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.level0-arrow {
  font-size: var(--text-xl);
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ===========================================================================
   14. Practice Screen — Level 0 sandbox
   =========================================================================== */

.practice-l0 {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) var(--space-16);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Section header label */
.p-section { display: flex; flex-direction: column; gap: var(--space-2); }

.p-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Phrase textarea */
.p-textarea {
  width: 100%;
  min-height: 80px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  resize: vertical;
  transition: border-color var(--transition-fast);
}
.p-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  outline: none;
}

/* Listen button — full width secondary */
.p-listen-btn { width: 100%; justify-content: center; gap: var(--space-2); }

/* Divider */
.p-divider {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.p-divider::before,
.p-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* Record button */
.p-record-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.p-record-btn {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
}
.p-record-btn:hover {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}
.p-record-btn:active { transform: scale(0.95); }

.p-record-btn--recording {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}
.p-record-btn--processing {
  border-color: var(--color-warning);
  background: var(--color-warning-bg);
  cursor: default;
}

/* Pulsing ring around record button */
.p-record-ring {
  position: absolute;
  inset: -8px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-error);
  opacity: 0;
  pointer-events: none;
}
.p-record-ring--active {
  animation: recordPulse 1.2s ease-in-out infinite;
}
@keyframes recordPulse {
  0%   { opacity: 0.7; transform: scale(1); }
  100% { opacity: 0;   transform: scale(1.4); }
}

/* Red dot inside record button */
.p-record-dot {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-error);
  transition: transform var(--transition-fast);
}
.p-record-btn--recording .p-record-dot {
  border-radius: var(--radius-sm);
  transform: scale(0.7);
}
.p-record-btn--processing .p-record-dot {
  background: var(--color-warning);
  animation: spin 0.8s linear infinite;
}

.p-record-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}

/* Status message */
.p-status {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  min-height: 1.25rem;
}
.p-status--error { color: var(--color-error); }
.p-status--warn  { color: var(--color-warning); }
.p-status--retrying {
  color: var(--color-warning);
  font-weight: 600;
  animation: retryPulse 1.5s ease-in-out infinite;
}
@keyframes retryPulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}
.p-status--countdown {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--color-primary);
  min-height: 2.5rem;
  line-height: 1;
  animation: countdownPulse 0.6s ease;
}
@keyframes countdownPulse {
  0%   { transform: scale(0.75); opacity: 0; }
  40%  { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* Results panel */
.p-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  animation: screenIn var(--transition-normal) ease;
}

/* Score rows */
.p-scores { display: flex; flex-direction: column; gap: var(--space-3); }

.p-score-item { display: flex; flex-direction: column; gap: var(--space-1); }

.p-score-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.p-score-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.p-score-value {
  font-size: var(--text-xl);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.p-score-value--excellent { color: var(--color-score-excellent); }
.p-score-value--good      { color: var(--color-score-good); }
.p-score-value--fair      { color: var(--color-score-fair); }
.p-score-value--poor      { color: var(--color-score-poor); }

.p-score-bar {
  height: 6px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.p-score-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}
.p-score-fill--excellent { background: var(--color-score-excellent); }
.p-score-fill--good      { background: var(--color-score-good); }
.p-score-fill--fair      { background: var(--color-score-fair); }
.p-score-fill--poor      { background: var(--color-score-poor); }

/* Word pills */
.p-words-wrap { display: flex; flex-direction: column; gap: var(--space-2); }

.p-words {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.p-word {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: default;
  transition: transform var(--transition-fast);
}
.p-word:hover { transform: scale(1.08); }

.p-word--none          { background: var(--color-success-bg); color: var(--color-success); }
.p-word--mispronunciation { background: var(--color-warning-bg); color: var(--color-warning); }
.p-word--omission      { background: var(--color-error-bg); color: var(--color-error); }
.p-word--insertion     {
  background: var(--color-surface-2);
  color: var(--color-text-subtle);
  text-decoration: line-through;
}

/* API error banner */
.p-error-banner {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  background: var(--color-error-bg);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.p-error-code {
  font-family: monospace;
  font-weight: 600;
  color: var(--color-error);
}

.p-error-suggestion {
  color: var(--color-text-subtle);
}

/* Practice action buttons */
.p-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: stretch;
}

/* Results stub (kept for Part 2) */
.results-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  min-height: calc(100dvh - var(--header-height));
  text-align: center;
}

.coming-soon-icon  { font-size: 56px; }
.coming-soon-title { font-size: var(--text-2xl); font-weight: 700; }
.coming-soon-text  {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 280px;
  line-height: var(--leading-normal);
}

/* ===========================================================================
   15. Toasts
   =========================================================================== */

#toast-container {
  position: fixed;
  bottom: calc(env(safe-area-inset-bottom, 0px) + var(--space-6));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 9999;
  pointer-events: none;
  width: calc(100% - var(--space-8));
  max-width: 420px;
}

.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  text-align: center;
  pointer-events: auto;
}

.toast--visible {
  opacity: 1;
  transform: translateY(0);
}

.toast--success { border-color: var(--color-success); color: var(--color-success); }
.toast--error   { border-color: var(--color-error);   color: var(--color-error); }
.toast--info    { border-color: var(--color-info);    color: var(--color-info); }

/* ===========================================================================
   16. Utility Classes
   =========================================================================== */

.hidden   { display: none !important; }
.sr-only  {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-muted  { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }
.text-sm     { font-size: var(--text-sm); }
.text-center { text-align: center; }
.font-bold   { font-weight: 700; }

.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.items-center{ align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2       { gap: var(--space-2); }
.gap-4       { gap: var(--space-4); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }

/* ===========================================================================
   17. Multiplayer Mode
   =========================================================================== */

/* Home screen button */
.multi-home-btn {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  background: linear-gradient(135deg, #4f46e520 0%, #7c3aed20 100%);
  border: 1px solid #7c3aed;
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  text-align: left;
  transition: filter var(--transition-fast), transform var(--transition-fast);
  margin-top: var(--space-4);
}
.multi-home-btn:hover  { filter: brightness(1.15); }
.multi-home-btn:active { transform: scale(0.98); }

.multi-home-icon { font-size: 28px; flex-shrink: 0; }

.multi-home-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.multi-home-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}

.multi-home-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Setup screen */
.multi-setup {
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  align-items: center;
}

.multi-setup-icon {
  font-size: 56px;
  text-align: center;
}

.multi-field {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.multi-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-2) 0;
}

.multi-stepper-value {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
  min-width: 2.5rem;
  text-align: center;
}

.multi-stepper .btn {
  font-size: var(--text-xl);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}

.multi-names {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.multi-name-input {
  text-align: center;
}

/* Playing screen */
.multi-playing {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.multi-turn-bar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.multi-turn-player {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.multi-turn-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.multi-turn-name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
}

.multi-turn-progress {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 600;
}

/* Player dots */
.multi-dots {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
}

.multi-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 2px solid var(--color-border);
  transition: all var(--transition-fast);
}

.multi-dot--active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  transform: scale(1.15);
  box-shadow: 0 0 12px color-mix(in srgb, var(--color-primary) 50%, transparent);
}

/* Phrase card */
.multi-phrase-card {
  width: 100%;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.multi-phrase-card--small {
  padding: var(--space-3);
}

.multi-phrase-card--small .multi-phrase-text {
  font-size: var(--text-sm);
}

.multi-phrase-text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: var(--space-2);
}

.multi-phrase-diff {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Score reveal */
.multi-score-reveal {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  animation: fadeScaleIn 0.4s ease-out;
}

@keyframes fadeScaleIn {
  from { opacity: 0; transform: scale(0.8); }
  to   { opacity: 1; transform: scale(1); }
}

.multi-score-big {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.multi-score-label {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
}

.multi-score-detail {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Results screen */
.multi-results {
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.multi-winner-card {
  text-align: center;
  padding: var(--space-6);
  background: linear-gradient(135deg, #fbbf2420 0%, #f59e0b20 100%);
  border: 1px solid #f59e0b;
  border-radius: var(--radius-xl);
  width: 100%;
  animation: fadeScaleIn 0.5s ease-out;
}

.multi-trophy {
  font-size: 56px;
  margin-bottom: var(--space-2);
}

.multi-winner-name {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.multi-winner-score {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: 600;
}

/* Ranking list */
.multi-ranking {
  width: 100%;
}

.multi-ranking-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* Player score card */
.multi-rank-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.multi-rank-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.multi-rank-medal {
  font-size: var(--text-xl);
  width: 2rem;
  text-align: center;
  flex-shrink: 0;
}

.multi-rank-name {
  font-weight: 700;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.multi-rank-avg {
  font-weight: 800;
  font-size: var(--text-lg);
  flex-shrink: 0;
}

/* Detailed criteria breakdown */
.multi-rank-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 0 var(--space-1);
}

.multi-detail-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.multi-detail-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  width: 7rem;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.multi-detail-bar-track {
  flex: 1;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.multi-detail-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

.multi-detail-value {
  font-size: var(--text-xs);
  font-weight: 700;
  width: 2rem;
  text-align: right;
  flex-shrink: 0;
}

/* Round chips */
.multi-rank-rounds {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  padding-top: var(--space-1);
  border-top: 1px solid var(--color-border);
}

.multi-round-chip {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

.multi-result-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: 100%;
}

/* ===========================================================================
   17b. Level cards — name label
   =========================================================================== */

.level-name {
  font-size: 7px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0 var(--space-1);
  line-height: 1.1;
}

/* ===========================================================================
   17c. Level practice screen (Levels 1–10)
   =========================================================================== */

.practice-level {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-4) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Progress bar */
.lv-progress {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.lv-progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 99px;
  overflow: hidden;
}

.lv-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 99px;
  transition: width 0.4s ease;
}

.lv-progress-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: right;
}

/* Item card */
.lv-item-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.lv-item-type {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0;
}

.lv-item-text {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  margin: 0;
}

.lv-item-ipa {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  font-style: italic;
  margin: 0;
}

.lv-item-translation {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
  padding-top: var(--space-1);
  border-top: 1px solid var(--color-border);
}

/* Focus phoneme badges */
.lv-phonemes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding-top: var(--space-1);
}

.lv-phoneme-badge {
  display: inline-block;
  padding: 2px var(--space-2);
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border-radius: 99px;
  font-size: var(--text-xs);
  font-weight: 700;
  font-family: monospace;
}

/* Collapsible tips */
.lv-tips {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lv-tips-summary {
  cursor: pointer;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  list-style: none;
  user-select: none;
}

.lv-tips-summary::-webkit-details-marker { display: none; }

.lv-tips[open] .lv-tips-summary {
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.lv-tips-list {
  margin: 0;
  padding: var(--space-3) var(--space-4) var(--space-3) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.lv-tips-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===========================================================================
   17d. Level summary screen
   =========================================================================== */

.lv-summary {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.lv-summary-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}

.lv-summary-trophy {
  font-size: 64px;
  line-height: 1;
}

.lv-summary-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  margin: 0;
}

.lv-summary-avg {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.lv-summary-avg-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.lv-summary-avg-value {
  font-size: var(--text-4xl);
  font-weight: 900;
  line-height: 1;
}

/* Persistent stats badges shown under the average score */
.lv-summary-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-2);
}

.lv-summary-stat {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.lv-summary-stat strong {
  color: var(--color-text);
  font-weight: 700;
  margin-left: 4px;
}

/* Per-item scores list */
.lv-summary-items {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.lv-summary-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.lv-summary-row:last-child { border-bottom: none; }

.lv-summary-row-num {
  flex-shrink: 0;
  width: 20px;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 700;
  text-align: center;
}

.lv-summary-row-text {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lv-summary-row-score {
  flex-shrink: 0;
  font-size: var(--text-base);
  font-weight: 700;
}

/* Summary action buttons */
.lv-summary-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ===========================================================================
   Tetris Screen
   =========================================================================== */

.tetris-home-btn {
  background: linear-gradient(135deg, rgba(160,0,240,0.15) 0%, var(--color-surface) 100%);
  border-color: #a000f0;
}

.tetris-body {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding-top: var(--header-height);
  padding-bottom: env(safe-area-inset-bottom, 8px);
}

.tetris-wrap {
  flex: 1;
  display: flex;
  gap: 8px;
  min-height: 0;
  padding: 8px 8px 0;
  align-items: flex-start;
}

.tetris-game-area {
  position: relative;
  flex-shrink: 0;
}

#tetris-canvas {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.tetris-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.tetris-overlay-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

.tetris-msg {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  max-width: 180px;
}

.tetris-side {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 75px;
  max-width: 95px;
}

.tetris-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tetris-panel-label {
  font-size: 10px;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.tetris-panel-val {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

#tetris-next-canvas {
  display: block;
  border-radius: 4px;
  background: #0d1117;
}

.tetris-controls {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px;
}

.tetris-row {
  display: flex;
  gap: 8px;
}

.t-btn {
  flex: 1;
  height: 52px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: var(--text-xl);
  font-weight: 700;
  touch-action: manipulation;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.t-btn:active {
  background: var(--color-primary-dim);
  transform: scale(0.93);
}

.t-drop-btn {
  background: linear-gradient(135deg, var(--color-primary-dim), var(--color-surface));
  border-color: var(--color-primary);
  font-size: var(--text-base);
}

/* ===========================================================================
   18. Responsive — clamp to max-width on desktop
   =========================================================================== */

@media (min-width: 520px) {
  .app-header {
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--max-width);
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
  }

  .screen-body {
    max-width: var(--max-width);
    margin: 0 auto;
  }

  body {
    background: var(--color-surface-2);
  }

  #app {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .screen {
    max-width: var(--max-width);
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    background: var(--color-bg);
    box-shadow: var(--shadow-lg);
  }
}

/* ===========================================================================
   18. Reduced Motion
   =========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}