:root {
  --bg-main: #0a0e17;
  --bg-card: #121826;
  --bg-card-hover: #182235;
  --bg-card-active: #1f2b44;
  --border-color: #202b3f;
  --border-focus: #00f0ff;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #00f0ff;
  --accent-blue: #38bdf8;
  --accent-green: #10b981;
  --accent-coral: #ff4757;
  --accent-amber: #fbbf24;
  --accent-purple: #a855f7;

  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
  --glow-green: 0 0 20px rgba(16, 185, 129, 0.35);
  --glow-coral: 0 0 20px rgba(255, 71, 87, 0.35);
  --glow-amber: 0 0 20px rgba(251, 191, 36, 0.35);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* Visibility Utilities */
.desktop-only { display: flex; }
.desktop-only-inline { display: inline; }
.mobile-only { display: none !important; }

/* ================== HEADER ================== */
.app-header {
  height: 64px;
  background: rgba(18, 24, 38, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.brand-badge {
  background: linear-gradient(135deg, #00f0ff, #3b82f6);
  color: #050b14;
  font-weight: 900;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--text-primary);
}

.brand-sub {
  font-size: 12px;
  color: var(--accent-cyan);
  font-weight: 600;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.crumb-item { cursor: pointer; transition: color 0.2s; }
.crumb-item:hover { color: var(--accent-cyan); }
.crumb-active { color: var(--text-secondary); font-weight: 500; }
.crumb-sep { color: var(--border-color); }

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

.timer-badge {
  background: rgba(32, 43, 63, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

.timer-icon { font-size: 12px; }
.timer-label { color: var(--text-muted); font-size: 11px; }
.timer-val {
  font-family: 'Consolas', 'Courier New', monospace;
  font-weight: 700;
  color: var(--accent-cyan);
}

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

.nav-links {
  display: flex;
  align-items: center;
  background: rgba(10, 14, 23, 0.7);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.nav-btn:hover { color: var(--text-primary); }
.nav-btn.active {
  background: var(--accent-cyan);
  color: #050b14;
  box-shadow: var(--glow-cyan);
}

.badge-count {
  background: var(--accent-coral);
  color: #fff;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  background: rgba(32, 43, 63, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}
.icon-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ================== MAIN CONTENT & VIEWS ================== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.view-section {
  display: none;
  flex: 1;
  width: 100%;
}

.view-section.active {
  display: flex;
  flex-direction: column;
}

/* ================== VIEW 1: HUB ================== */
#viewHub {
  padding: 32px 24px;
  max-width: 1240px;
  margin: 0 auto;
}

.hub-header {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 24px;
}

.hub-welcome h2 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
  background: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hub-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

.hub-quick-toolbar {
  display: flex;
  gap: 10px;
}

.btn-tool-pill {
  background: rgba(32, 43, 63, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s;
}
.btn-tool-pill:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.hub-stats-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.stat-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  min-width: 110px;
}

.stat-title {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.stat-number {
  font-size: 20px;
  font-weight: 800;
  font-family: 'Consolas', monospace;
}

.color-cyan { color: var(--accent-cyan); }
.color-green { color: var(--accent-green); }
.color-coral { color: var(--accent-coral); }
.color-gray { color: var(--text-muted); }

/* Subject Tabs */
.subject-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 24px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.subject-tabs::-webkit-scrollbar { display: none; }

.subject-tab {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}

.subject-tab:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.subject-tab.active {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

/* Chapters Grid */
.chapters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 18px;
}

.chapter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.chapter-card:hover {
  border-color: rgba(0, 240, 255, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.chapter-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.chapter-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.ch-acc-badge {
  font-size: 12px;
  font-weight: 800;
  font-family: monospace;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  white-space: nowrap;
}

.ch-acc-badge.empty {
  background: rgba(100, 116, 139, 0.12);
  color: var(--text-muted);
  border-color: var(--border-color);
}

.chapter-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

.progress-bar-bg {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: 4px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #00f0ff, #10b981);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.chapter-actions-row {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr;
  gap: 8px;
  margin-top: auto;
}

.chapter-sub-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px dashed rgba(255, 255, 255, 0.06);
}

.btn-card-primary {
  background: var(--accent-cyan);
  color: #050b14;
  border: none;
  font-size: 13px;
  font-weight: 700;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.btn-card-primary:hover {
  box-shadow: var(--glow-cyan);
  transform: translateY(-1px);
}

.btn-card-secondary {
  background: rgba(32, 43, 63, 0.5);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 9px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn-card-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
}

.btn-mistake-pill {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-coral);
  background: rgba(255, 71, 87, 0.12);
  border: 1px solid rgba(255, 71, 87, 0.3);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  cursor: pointer;
}
.btn-mistake-pill:hover { background: rgba(255, 71, 87, 0.2); }

.btn-reset-ch {
  font-size: 11px;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
}
.btn-reset-ch:hover { color: var(--accent-coral); }

/* ================== VIEW 2: PRACTICE STREAM ================== */
#viewPractice {
  padding: 16px 14px 28px;
  align-items: center;
}

.practice-container {
  width: 100%;
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 auto;
}

/* Practice Toolbar */
.practice-toolbar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.p-toolbar-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.p-meta-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.p-subject-tag {
  font-size: 12px;
  color: var(--accent-purple);
  font-weight: 600;
  background: rgba(168, 85, 247, 0.12);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.p-chapter-tag {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 600;
}

.p-type-tag {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.type-single {
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
}

.type-multi {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.p-actions-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.p-toolbar-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* Mode switcher pill group */
.mode-switch-group {
  display: flex;
  background: rgba(10, 14, 23, 0.8);
  border: 1px solid var(--border-color);
  padding: 2px;
  border-radius: var(--radius-full);
}

.btn-mode-pill {
  background: transparent;
  border: none;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.btn-mode-pill.active {
  background: var(--accent-cyan);
  color: #050b14;
  box-shadow: var(--glow-cyan);
}

.progress-indicator {
  font-family: 'Consolas', monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  padding: 3px 9px;
  border-radius: var(--radius-md);
}

.btn-flag {
  background: rgba(32, 43, 63, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s;
}

.btn-flag.active {
  background: rgba(251, 191, 36, 0.15);
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.btn-drawer {
  background: rgba(32, 43, 63, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

/* Question Card */
.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  touch-action: pan-y;
}

.q-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.q-badges-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.q-badge {
  background: linear-gradient(135deg, #00f0ff, #3b82f6);
  color: #050b14;
  font-size: 12px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.q-tag-badge {
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-purple);
  border: 1px solid rgba(168, 85, 247, 0.3);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.q-swipe-hint {
  font-size: 11px;
  color: var(--text-muted);
  opacity: 0.8;
}

.q-stem {
  font-size: 17.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.q-sub-items {
  background: rgba(10, 14, 23, 0.6);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 15px;
  color: #cbd5e1;
}

.sub-item-line { line-height: 1.5; }

/* Options Grid */
.q-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 4px;
}

.option-item {
  background: rgba(24, 34, 53, 0.4);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 13px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  min-height: 52px;
}

.option-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 240, 255, 0.4);
}

.option-item:active {
  transform: scale(0.985);
}

.option-key-badge {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  color: var(--text-secondary);
  transition: all 0.2s;
  flex-shrink: 0;
}

.option-text {
  font-size: 15.5px;
  color: var(--text-primary);
  line-height: 1.45;
  flex: 1;
}

/* Option Selected State */
.option-item.selected {
  background: rgba(0, 240, 255, 0.08);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

.option-item.selected .option-key-badge {
  background: var(--accent-cyan);
  color: #050b14;
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

/* Correct / Wrong States */
.option-item.is-correct-std {
  border-color: var(--accent-green) !important;
  background: rgba(16, 185, 129, 0.12) !important;
}

.option-item.is-correct-std .option-key-badge {
  background: var(--accent-green) !important;
  color: #fff !important;
  border-color: var(--accent-green) !important;
  box-shadow: var(--glow-green);
}

.option-item.is-wrong-selected {
  border-color: var(--accent-coral) !important;
  background: rgba(255, 71, 87, 0.12) !important;
}

.option-item.is-wrong-selected .option-key-badge {
  background: var(--accent-coral) !important;
  color: #fff !important;
  border-color: var(--accent-coral) !important;
  box-shadow: var(--glow-coral);
}

/* Multi submit bar */
.multi-submit-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.btn-submit-multi {
  background: var(--accent-amber);
  color: #050b14;
  border: none;
  font-size: 14px;
  font-weight: 800;
  padding: 9px 22px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-submit-multi:hover {
  box-shadow: var(--glow-amber);
}

.multi-tip-text {
  font-size: 13px;
  color: var(--text-muted);
}

/* ================== RICH EXPLANATION PANEL ================== */
.explanation-panel {
  background: rgba(10, 14, 23, 0.95);
  border: 1px solid #1f2d48;
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: fadeInDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.expl-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.expl-ans-tag {
  display: flex;
  align-items: center;
  gap: 8px;
}

.expl-ans-tag .label {
  font-size: 13px;
  color: var(--text-muted);
}

.expl-ans-tag .ans-val {
  font-size: 19px;
  font-weight: 900;
  font-family: monospace;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.15);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.expl-source-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.expl-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.expl-section-title {
  font-size: 13.5px;
  font-weight: 700;
  color: #38bdf8;
}

.expl-text {
  font-size: 14.5px;
  color: #e2e8f0;
  line-height: 1.7;
  white-space: pre-wrap;
}

.expl-tips-box {
  background: rgba(251, 191, 36, 0.06);
  border: 1px solid rgba(251, 191, 36, 0.3);
  border-left: 4px solid var(--accent-amber);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tips-title {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  gap: 6px;
}

.tips-content {
  font-size: 13.5px;
  color: #f1f5f9;
  line-height: 1.65;
  white-space: pre-wrap;
}

/* Practice Bottom Bar */
.practice-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 6px;
}

.ctrl-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
  user-select: none;
}

.ctrl-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-next {
  background: var(--accent-cyan);
  color: #050b14;
  border-color: var(--accent-cyan);
}

.btn-next:hover {
  background: #25f4ff;
  box-shadow: var(--glow-cyan);
  color: #050b14;
}

.btn-exam-finish {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
  border: none;
}
.btn-exam-finish:hover {
  box-shadow: var(--glow-green);
  color: #fff;
}

.keyboard-hints {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--text-muted);
}

kbd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 10px;
  font-family: monospace;
  color: var(--text-secondary);
}

/* ================== VIEW 3: MISTAKES ================== */
#viewMistakes {
  padding: 32px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.mistakes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.m-head-left h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 4px;
}

.m-head-left p {
  font-size: 14px;
  color: var(--text-muted);
}

.mistakes-filters {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.mistakes-filters select {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  outline: none;
  cursor: pointer;
}

.m-stats-summary {
  font-size: 13px;
  color: var(--accent-coral);
  font-weight: 700;
  margin-left: auto;
}

.mistakes-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mistake-card-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.2s;
}

.mistake-card-item:hover {
  border-color: rgba(255, 71, 87, 0.4);
}

.m-item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.m-item-stem {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
}

.m-item-answers {
  display: flex;
  gap: 20px;
  font-size: 14px;
  padding: 10px 14px;
  background: rgba(10, 14, 23, 0.6);
  border-radius: var(--radius-sm);
}

.m-item-expl-snippet {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-left: 2px solid var(--border-color);
  padding-left: 10px;
}

.m-item-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.btn-sm-action {
  background: rgba(32, 43, 63, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.btn-sm-action:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

/* ================== MODALS & DRAWERS ================== */
.modal-backdrop, .drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(5, 10, 18, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-card {
  background: #111726;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  animation: modalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  0% { transform: scale(0.95); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-title h3 {
  font-size: 16px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body {
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #050b14;
  border: none;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary:hover { box-shadow: var(--glow-cyan); }

.btn-secondary {
  background: rgba(32, 43, 63, 0.5);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
}

/* Exam Summary Card */
.exam-summary-card {
  background: rgba(10, 14, 23, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.accuracy-circle {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  border: 4px solid var(--accent-cyan);
  box-shadow: var(--glow-cyan);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.accuracy-circle span:first-child {
  font-size: 20px;
  font-weight: 800;
  font-family: monospace;
  color: var(--text-primary);
}

.accuracy-label {
  font-size: 10px;
  color: var(--text-muted);
}

.report-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 20px;
  flex: 1;
}

.metric-item {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.metric-item .m-label { color: var(--text-muted); }
.metric-item .m-val { font-weight: 700; font-family: monospace; }

.report-list-box {
  max-height: 240px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.report-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.report-row:last-child { border-bottom: none; }
.row-correct { background: rgba(16, 185, 129, 0.05); }
.row-wrong { background: rgba(255, 71, 87, 0.08); }

/* Drawer Panel */
.drawer-backdrop { justify-content: flex-end; }
.drawer-panel {
  width: 100%;
  max-width: 380px;
  height: 100%;
  background: #111726;
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  box-shadow: -15px 0 35px rgba(0, 0, 0, 0.5);
  animation: slideInRight 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.drawer-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-header h3 { font-size: 16px; font-weight: 700; }
.drawer-close { background: none; border: none; font-size: 24px; color: var(--text-muted); cursor: pointer; }

.drawer-legend {
  padding: 10px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 11px;
  color: var(--text-secondary);
}

.legend-item { display: flex; align-items: center; gap: 5px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-unanswered { background: var(--text-muted); }
.dot-answered { background: var(--accent-cyan); }
.dot-flagged { background: var(--accent-amber); }
.dot-correct { background: var(--accent-green); }
.dot-wrong { background: var(--accent-coral); }

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  align-content: flex-start;
}

.grid-q-btn {
  aspect-ratio: 1;
  background: rgba(32, 43, 63, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.15s;
}

.grid-q-btn:hover { border-color: var(--accent-cyan); color: var(--text-primary); }
.grid-q-btn.current { border-color: #fff; box-shadow: 0 0 10px rgba(255, 255, 255, 0.4); }
.grid-q-btn.has-answered { background: rgba(0, 240, 255, 0.15); border-color: var(--accent-cyan); color: var(--accent-cyan); }
.grid-q-btn.is-correct { background: rgba(16, 185, 129, 0.2); border-color: var(--accent-green); color: var(--accent-green); }
.grid-q-btn.is-wrong { background: rgba(255, 71, 87, 0.2); border-color: var(--accent-coral); color: var(--accent-coral); }
.grid-q-btn.is-flagged::after { content: '★'; position: absolute; top: 2px; right: 2px; font-size: 9px; color: var(--accent-amber); }

.drawer-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border-color);
}

.btn-block {
  width: 100%;
  background: var(--accent-green);
  color: #ffffff;
  border: none;
  font-weight: 700;
  padding: 11px;
  border-radius: var(--radius-md);
  cursor: pointer;
}

/* ================== MOBILE-FIRST ADAPTATIONS ================== */
@media (max-width: 768px) {
  .desktop-only { display: none !important; }
  .mobile-only { display: flex !important; }

  /* Adjust body padding for bottom navigation */
  body {
    padding-bottom: calc(62px + env(safe-area-inset-bottom, 0px));
  }

  /* Compact Header */
  .app-header {
    height: 46px;
    padding: 0 12px;
  }

  .header-left {
    gap: 8px;
  }

  .brand {
    gap: 6px;
  }

  .brand-title {
    font-size: 14px;
    letter-spacing: -0.2px;
    white-space: nowrap;
  }

  .brand-badge {
    font-size: 9.5px;
    padding: 1px 4px;
  }

  .mobile-header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .m-icon-btn {
    background: rgba(32, 43, 63, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 3px;
  }

  /* View Hub */
  #viewHub {
    padding: 16px 12px 24px;
  }

  .hub-welcome h2 {
    font-size: 20px;
  }

  .hub-desc {
    font-size: 12.5px;
  }

  .hub-stats-bar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    width: 100%;
  }

  .stat-pill {
    min-width: 0;
    padding: 10px 14px;
  }

  .stat-number {
    font-size: 18px;
  }

  .subject-tabs {
    gap: 6px;
    margin-bottom: 16px;
  }

  .subject-tab {
    font-size: 13px;
    padding: 8px 14px;
  }

  .chapters-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .chapter-card {
    padding: 16px 14px;
    gap: 12px;
  }

  .chapter-actions-row {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 6px;
  }

  .btn-card-primary, .btn-card-secondary {
    padding: 8px 6px;
    font-size: 12px;
  }

  /* Practice View on Mobile */
  #viewPractice {
    padding: 8px 10px 20px;
  }

  .practice-toolbar {
    padding: 6px 8px;
    gap: 6px;
    background: rgba(18, 24, 38, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 10px;
  }

  .p-toolbar-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 6px;
  }

  .p-left-group {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    flex: 1;
    overflow: hidden;
  }

  /* Mobile Mode Pill Button */
  .m-mode-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: rgba(0, 240, 255, 0.12);
    border: 1px solid rgba(0, 240, 255, 0.35);
    color: var(--accent-cyan);
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.2s ease;
  }

  .m-mode-pill:active {
    transform: scale(0.96);
    background: rgba(0, 240, 255, 0.25);
  }

  .m-mode-chevron {
    font-size: 9px;
    opacity: 0.8;
  }

  .p-meta-tags {
    display: flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
    overflow: hidden;
  }

  .p-subject-tag, .p-chapter-tag, .p-type-tag {
    padding: 2px 6px;
    font-size: 10.5px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
  }

  .p-actions-group {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
  }

  .p-actions-group .btn-flag {
    padding: 4px 8px;
    font-size: 11px;
    border-radius: var(--radius-full);
    gap: 2px;
  }

  .btn-label-text {
    font-size: 11px;
  }

  .question-card {
    padding: 16px 14px;
    gap: 14px;
    border-radius: 12px;
  }

  .q-stem {
    font-size: 16px;
    line-height: 1.6;
  }

  .q-sub-items {
    padding: 10px 12px;
    font-size: 14px;
  }

  .option-item {
    min-height: 48px;
    padding: 10px 12px;
    gap: 10px;
  }

  .option-key-badge {
    width: 28px;
    height: 28px;
    font-size: 13.5px;
  }

  .option-text {
    font-size: 14.5px;
    line-height: 1.4;
  }

  .explanation-panel {
    padding: 14px 12px;
    gap: 12px;
  }

  .expl-ans-tag .ans-val {
    font-size: 16px;
  }

  .expl-text {
    font-size: 13.5px;
  }

  .expl-tips-box {
    padding: 10px 12px;
  }

  .practice-bottom-bar {
    gap: 10px;
    position: sticky;
    bottom: calc(56px + env(safe-area-inset-bottom, 0px));
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 8px 0;
    z-index: 50;
  }

  .ctrl-btn {
    padding: 10px 16px;
    font-size: 13.5px;
    flex: 1;
    justify-content: center;
  }

  .btn-next {
    flex: 1.3;
  }

  /* Mobile Bottom Navigation Bar */
  .mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(54px + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: rgba(18, 24, 38, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-around;
    z-index: 900;
  }

  .m-nav-item {
    flex: 1;
    background: none;
    border: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: var(--text-muted);
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    padding: 4px 0;
    transition: all 0.15s;
  }

  .m-nav-icon {
    font-size: 18px;
    line-height: 1;
  }

  .m-nav-item.active {
    color: var(--accent-cyan);
  }

  .m-badge-count {
    position: absolute;
    top: 2px;
    right: 25%;
    background: var(--accent-coral);
    color: #fff;
    font-size: 9px;
    font-weight: 800;
    padding: 1px 5px;
    border-radius: var(--radius-full);
  }

  /* Drawer mobile width */
  .drawer-panel {
    max-width: 100%;
    width: 100%;
  }

  .drawer-body {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    padding: 12px;
  }

  /* Bottom Sheet Modal */
  .modal-bottom-sheet {
    max-width: 100% !important;
    width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    align-self: flex-end;
    margin-bottom: 0;
    animation: slideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  @keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
  }

  .sheet-action-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .sheet-btn {
    background: rgba(32, 43, 63, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    text-align: left;
    color: var(--text-primary);
  }

  .sheet-btn-icon {
    font-size: 24px;
  }

  .sheet-btn-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .sheet-btn-title {
    font-size: 14.5px;
    font-weight: 700;
  }

  .sheet-btn.active {
    background: rgba(0, 240, 255, 0.12);
    border-color: rgba(0, 240, 255, 0.4);
  }

  .sheet-btn.active .sheet-btn-title {
    color: var(--accent-cyan);
  }

  /* Live Timers Grid inside More Menu Sheet */
  .sheet-timers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 12px;
  }

  .sheet-timer-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .sheet-timer-label {
    font-size: 11px;
    color: var(--text-muted);
  }

  .sheet-timer-val {
    font-size: 16px;
    font-weight: 800;
    font-family: var(--font-mono, monospace);
    letter-spacing: 0.5px;
  }

  .mobile-app-tip-box {
    background: rgba(0, 240, 255, 0.06);
    border: 1px dashed rgba(0, 240, 255, 0.3);
    border-radius: var(--radius-md);
    padding: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
  }

  .mobile-app-tip-box b {
    color: var(--accent-cyan);
  }

  .tip-title {
    font-weight: 700;
    color: var(--accent-cyan);
    display: block;
    margin-bottom: 4px;
  }
}

/* ================== CLOUD AUTH & SYNC MODULE ================== */
.user-profile-area {
  display: inline-flex;
  align-items: center;
  position: relative;
  margin-left: 6px;
}

.btn-auth-login {
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.4);
  color: var(--accent-cyan);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-auth-login:hover {
  background: rgba(0, 240, 255, 0.16);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

.user-logged-in-block {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-sync-pill {
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.35);
  color: var(--accent-green);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
}

.btn-sync-pill:hover {
  background: rgba(0, 255, 136, 0.16);
  border-color: var(--accent-green);
}

.btn-download-pill {
  background: rgba(0, 240, 255, 0.08);
  border-color: rgba(0, 240, 255, 0.35);
  color: var(--accent-cyan);
}

.btn-download-pill:hover {
  background: rgba(0, 240, 255, 0.16);
  border-color: var(--accent-cyan);
}

.btn-sync-pill.dirty {
  background: rgba(255, 204, 0, 0.12);
  border-color: rgba(255, 204, 0, 0.5);
  color: var(--accent-gold);
  animation: pulse-sync 2s infinite ease-in-out;
}

@keyframes pulse-sync {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.btn-sync-pill.syncing .sync-icon {
  display: inline-block;
  animation: spin 1s infinite linear;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 5px 10px;
  border-radius: var(--radius-full);
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.user-badge:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
}

.user-avatar-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00ff88;
  box-shadow: 0 0 8px rgba(0, 255, 136, 0.8);
}

.user-nickname {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-arrow {
  font-size: 10px;
  color: var(--text-muted);
}

/* User Dropdown Menu */
.user-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  min-width: 190px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
  z-index: 1000;
  padding: 8px;
}

.user-menu-header {
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.user-menu-header strong {
  font-size: 13px;
  color: var(--text-primary);
}

.menu-sync-time {
  font-size: 11px;
  color: var(--text-muted);
}

.user-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 6px 0;
}

.user-menu-item {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: all 0.15s ease;
}

.user-menu-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.user-menu-item.color-coral:hover {
  background: rgba(255, 99, 132, 0.12);
  color: var(--accent-coral);
}

/* Auth Modal Styles */
.auth-card {
  max-width: 440px;
  width: 100%;
}

.auth-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border-color);
  padding: 4px;
  gap: 4px;
}

.auth-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 9px 4px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-tab-btn.active {
  background: var(--bg-card);
  color: var(--accent-cyan);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.auth-body {
  padding: 20px 24px;
}

.auth-notice {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  line-height: 1.4;
}

.auth-notice.error {
  background: rgba(255, 77, 77, 0.12);
  border: 1px solid rgba(255, 77, 77, 0.35);
  color: #ff6b6b;
}

.auth-notice.success {
  background: rgba(0, 255, 136, 0.12);
  border: 1px solid rgba(0, 255, 136, 0.35);
  color: var(--accent-green);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.label-row label {
  margin-bottom: 0;
}

.link-sub {
  font-size: 12px;
  color: var(--accent-cyan);
  text-decoration: none;
  cursor: pointer;
}

.link-sub:hover {
  text-decoration: underline;
}

.form-control {
  width: 100%;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.15);
}

.auth-switch-tip {
  text-align: center;
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.auth-switch-tip a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  margin-left: 4px;
}

.form-info-banner {
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.auth-footer {
  display: flex;
  justify-content: center;
  padding: 12px 24px;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.15);
}

.link-admin-secret {
  font-size: 11px;
  color: var(--text-muted);
  text-decoration: none;
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.link-admin-secret:hover {
  opacity: 1;
  color: var(--accent-cyan);
}

/* Admin Modal & Result Box */
.admin-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.admin-desc code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-cyan);
}

.admin-result-box {
  margin-top: 20px;
  padding: 16px;
  background: rgba(0, 255, 136, 0.06);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: var(--radius-md);
  text-align: center;
}

.result-title {
  font-size: 12px;
  color: var(--accent-green);
  margin-bottom: 8px;
}

.result-code-display {
  font-size: 32px;
  font-weight: 800;
  font-family: var(--font-mono, monospace);
  letter-spacing: 6px;
  color: var(--accent-cyan);
  margin-bottom: 14px;
  user-select: all;
}

/* Mobile User Card */
.m-user-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 12px;
}

.m-user-prompt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.m-user-prompt-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.m-user-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

.m-user-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.m-user-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.m-user-badge-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.m-user-btn-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}