/* ==========================================================================
   WordMaster Theme & Modern Design System
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme Default */
  --bg-primary: #0a0c16;
  --bg-surface: #121526;
  --bg-surface-elevated: #1a1e36;
  --bg-surface-hover: #222744;
  --bg-input: #15182e;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-active: #6366f1;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);
  
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --success-border: rgba(16, 185, 129, 0.4);
  
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --warning-border: rgba(245, 158, 11, 0.4);
  
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --danger-border: rgba(239, 68, 68, 0.4);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 25px var(--primary-glow);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light Theme Variables */
body.light-theme {
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --bg-input: #ffffff;
  
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.15);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
}

/* Base resets */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  min-height: 100%;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Main App Shell */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

/* ==========================================================================
   Header Navigation
   ========================================================================== */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 20px;
  position: sticky;
  top: 0;
  background: rgba(10, 12, 22, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
}

body.light-theme .header {
  background: rgba(248, 250, 252, 0.85);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.logo-icon {
  font-size: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

body.light-theme .brand-title {
  background: linear-gradient(135deg, #1e1b4b 40%, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.nav-tabs {
  display: flex;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  gap: 4px;
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.nav-tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-tab.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

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

.btn-icon-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.btn-icon-pill:hover {
  background: var(--bg-surface-hover);
  border-color: var(--primary);
}

.btn-icon-pill.highlight {
  border-color: rgba(99, 102, 241, 0.6);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.btn-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition-fast);
  position: relative;
}

.btn-icon:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
}

.speed-badge {
  position: absolute;
  bottom: -4px;
  right: -4px;
  background: var(--primary);
  color: white;
  font-size: 0.62rem;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 4px;
}

/* ==========================================================================
   Block Selector Tabs
   ========================================================================== */

.block-selector-section {
  margin-bottom: 24px;
}

.block-selector-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.block-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.block-tabs::-webkit-scrollbar {
  display: none;
}

.block-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.block-tab:hover {
  border-color: var(--border-medium);
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.block-tab.active {
  background: var(--bg-surface-elevated);
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.2);
}

.block-badge {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
}

.block-tab.active .block-badge {
  background: var(--primary);
  color: white;
}

.block-stats {
  display: flex;
  gap: 8px;
}

.stat-pill {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.stat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

/* ==========================================================================
   Main Content Views
   ========================================================================== */

.main-content {
  flex: 1;
}

.app-view {
  display: none;
  animation: fadeIn 0.25s ease forwards;
}

.app-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   VIEW 1: DICTATION / SMART TYPING QUIZ
   ========================================================================== */

.quiz-subnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}

.quiz-mode-toggles {
  display: flex;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  gap: 4px;
}

.mode-toggle {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

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

.mode-toggle.active {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-text-sm {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

/* Progress bar */
.quiz-progress-wrapper {
  margin-bottom: 24px;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background: var(--bg-surface);
  border-radius: var(--radius-pill);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-subtle);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #06b6d4);
  border-radius: var(--radius-pill);
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Question Card */
.quiz-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  position: relative;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.quiz-card.state-correct {
  border-color: var(--success);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.25);
}

.quiz-card.state-typo {
  border-color: var(--warning);
  box-shadow: 0 0 30px rgba(245, 158, 11, 0.25);
}

.quiz-card.state-wrong {
  border-color: var(--danger);
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.25);
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.card-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.block-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.btn-circle-audio {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-circle-audio:hover {
  background: var(--bg-surface-hover);
  border-color: var(--primary);
  transform: scale(1.03);
}

.btn-circle-audio:active {
  transform: scale(0.97);
}

.quiz-prompt-box {
  text-align: center;
  margin-bottom: 30px;
}

.prompt-hint-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 8px;
}

.prompt-text {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.25;
}

.prompt-subtext {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* Live typing input */
.quiz-input-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-field-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.quiz-input {
  width: 100%;
  background: var(--bg-input);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 16px 48px 16px 20px;
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.quiz-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.btn-input-clear {
  position: absolute;
  right: 14px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-secondary);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

.btn-input-clear:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

/* Hint preview */
.hint-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--bg-surface-elevated);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--warning-border);
}

.hint-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--warning);
}

.hint-mask {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--text-primary);
}

/* Quiz Action Buttons Row */
.quiz-btn-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-primary {
  flex: 2;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 24px;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  flex: 1;
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.shortcut {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* Feedback Banner */
.feedback-banner {
  margin-top: 20px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  animation: slideUp 0.25s ease forwards;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.feedback-banner.correct {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
}

.feedback-banner.typo {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
}

.feedback-banner.wrong {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
}

.feedback-content {
  display: flex;
  align-items: center;
  gap: 14px;
}

.feedback-icon {
  font-size: 2rem;
}

.feedback-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.feedback-details {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.feedback-details strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.btn-feedback-next {
  background: #ffffff;
  color: #0f172a;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.btn-feedback-next:hover {
  transform: scale(1.04);
}

/* ==========================================================================
   VIEW: MULTIPLE CHOICE TEST (С ЛОВУШКАМИ)
   ========================================================================== */

.test-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 28px 0 24px;
}

.test-option-btn {
  background: var(--bg-surface-elevated);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
  user-select: none;
  width: 100%;
}

.test-option-btn:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--bg-surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.2);
}

.test-option-btn:active:not(:disabled) {
  transform: translateY(0);
}

.test-option-key {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.test-option-btn:hover:not(:disabled) .test-option-key {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(99, 102, 241, 0.12);
}

.test-option-text {
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.35;
  flex: 1;
}

/* Correct Option States */
.test-option-btn.correct,
.test-option-btn.revealed-correct {
  border-color: var(--success) !important;
  background: rgba(16, 185, 129, 0.16) !important;
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.3) !important;
}

.test-option-btn.correct .test-option-key,
.test-option-btn.revealed-correct .test-option-key {
  background: var(--success) !important;
  color: #ffffff !important;
  border-color: var(--success) !important;
}

/* Wrong Option State */
.test-option-btn.wrong {
  border-color: var(--danger) !important;
  background: rgba(239, 68, 68, 0.16) !important;
  box-shadow: 0 0 25px rgba(239, 68, 68, 0.3) !important;
  animation: shake 0.4s ease;
}

.test-option-btn.wrong .test-option-key {
  background: var(--danger) !important;
  color: #ffffff !important;
  border-color: var(--danger) !important;
}

.test-option-btn:disabled {
  cursor: default;
}

.test-option-btn.dimmed {
  opacity: 0.45;
}

.test-shortcuts-hint {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 14px;
}

/* Test mistake item styling in results */
.test-mistake-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

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

.test-mistake-prompt {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.test-mistake-comparison {
  display: flex;
  gap: 16px;
  font-size: 0.92rem;
  flex-wrap: wrap;
}

.test-mistake-chosen {
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 4px;
}

.test-mistake-correct {
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.btn-circle-audio-sm {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.btn-circle-audio-sm:hover {
  background: var(--bg-surface-hover);
  border-color: var(--primary);
  transform: scale(1.1);
}

/* Auto-Advance Button in Subnav */
#btn-test-auto-advance.active {
  color: var(--accent-cyan);
  border-color: rgba(6, 182, 212, 0.4);
  background: rgba(6, 182, 212, 0.12);
}

/* Master sound button muted state */
#btn-sound-toggle:not(.active) {
  opacity: 0.6;
}

/* ==========================================================================
   Results Screen
   ========================================================================== */

.results-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.results-badge-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 0 35px var(--primary-glow);
}

.results-percent {
  font-size: 2.2rem;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.results-percent-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  text-transform: uppercase;
}

.results-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.results-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 28px;
}

.results-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.result-stat-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.result-stat-card.green .stat-num { color: var(--success); }
.result-stat-card.yellow .stat-num { color: var(--warning); }
.result-stat-card.red .stat-num { color: var(--danger); }

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.stat-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Mistakes list in summary */
.results-mistakes-section {
  text-align: left;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 28px;
}

.mistakes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.mistakes-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-primary.highlight {
  background: linear-gradient(135deg, #ef4444, #f97316);
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4);
}

.mistakes-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 6px;
}

.mistake-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  gap: 12px;
}

.mistake-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
}

.mistake-header-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 8px;
}

.mistake-en {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1rem;
}

.mistake-ru {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.badge-mini-typo {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.35);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
}

.badge-mini-wrong {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.35);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
}

.badge-mini-skip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-muted);
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
}

.mistake-sub-details {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

.typo-val {
  color: var(--warning);
  font-family: var(--font-mono);
  font-weight: 700;
}

.wrong-val {
  color: var(--danger);
  text-decoration: line-through;
  font-family: var(--font-mono);
  font-weight: 700;
}

.block-tag.badge-repeat {
  color: #f97316 !important;
  background: rgba(249, 115, 22, 0.16) !important;
  border: 1px solid rgba(249, 115, 22, 0.35) !important;
  font-weight: 800 !important;
}

.results-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

/* ==========================================================================
   VIEW 2: FLASHCARDS
   ========================================================================== */

.cards-subnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

/* Flashcards Progress Bar */
.cards-progress-wrapper {
  margin-bottom: 20px;
}

.cards-session-badges {
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-badge-mini {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card-badge-mini.green {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.card-badge-mini.red {
  background: var(--danger-bg);
  color: #f87171;
  border: 1px solid var(--danger-border);
}

.cards-progress-pct {
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 0.82rem;
  margin-left: 4px;
}

.cards-results-container {
  animation: fadeIn 0.25s ease forwards;
}

.cards-results-container.hidden,
.cards-active-stage.hidden {
  display: none !important;
}

.card-counter {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-secondary);
}

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

.toggle-control {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 600;
}

/* Card Direction Toggles */
.cards-subnav-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.card-direction-toggles {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  gap: 4px;
}

.card-dir-toggle {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.card-dir-toggle:hover {
  color: var(--text-primary);
}

.card-dir-toggle.active {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-icon-sm {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.btn-icon-sm:hover {
  color: var(--primary);
  background: var(--bg-surface-hover);
  transform: rotate(180deg);
}

/* 3D Flip Card Scene */
.flashcard-scene {
  perspective: 1200px;
  position: relative;
  width: 100%;
  min-height: 340px;
  margin-bottom: 24px;
}

.flashcard {
  width: 100%;
  min-height: 340px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.flashcard.flipped {
  transform: rotateY(180deg);
}

/* Swiping state (dragging) */
.flashcard.swiping {
  transition: none !important;
  cursor: grabbing !important;
}

.flashcard.swipe-out-right {
  transition: transform 0.28s cubic-bezier(0.2, 0.9, 0.3, 1), opacity 0.25s ease !important;
  transform: translate3d(140%, 15px, 0) rotate(18deg) !important;
  opacity: 0 !important;
}

.flashcard.flipped.swipe-out-right {
  transform: translate3d(140%, 15px, 0) rotate(18deg) rotateY(180deg) !important;
}

.flashcard.swipe-out-left {
  transition: transform 0.28s cubic-bezier(0.2, 0.9, 0.3, 1), opacity 0.25s ease !important;
  transform: translate3d(-140%, 15px, 0) rotate(-18deg) !important;
  opacity: 0 !important;
}

.flashcard.flipped.swipe-out-left {
  transform: translate3d(-140%, 15px, 0) rotate(-18deg) rotateY(180deg) !important;
}

/* Swipe Stamp Badges */
.card-swipe-badge {
  position: absolute;
  top: 20px;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 20;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.12s ease, transform 0.12s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.card-swipe-badge.badge-know {
  right: 20px;
  color: #10b981;
  background: rgba(16, 185, 129, 0.18);
  border: 2px solid #10b981;
  transform: rotate(12deg) scale(0.9);
}

.card-swipe-badge.badge-repeat {
  left: 20px;
  color: #ef4444;
  background: rgba(239, 68, 68, 0.18);
  border: 2px solid #ef4444;
  transform: rotate(-12deg) scale(0.9);
}

/* Single smooth transition when moving to next card (No double animation, No 3D spin) */
.flashcard.card-next-right {
  animation: cardSlideRight 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.flashcard.card-next-left {
  animation: cardSlideLeft 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cardSlideRight {
  0% {
    transform: translateX(-36px) scale(0.97);
    opacity: 0.2;
  }
  100% {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
}

@keyframes cardSlideLeft {
  0% {
    transform: translateX(36px) scale(0.97);
    opacity: 0.2;
  }
  100% {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
}

/* Tactile glow pulses on rating */
.flashcard.pulse-know .card-face {
  border-color: rgba(16, 185, 129, 0.7) !important;
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.3) !important;
}

.flashcard.pulse-repeat .card-face {
  border-color: rgba(239, 68, 68, 0.7) !important;
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.3) !important;
}

.card-face {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-medium);
}

.card-front {
  background: radial-gradient(circle at top right, #1e223d, var(--bg-surface));
}

.card-back {
  background: radial-gradient(circle at top left, #1a2736, var(--bg-surface));
  transform: rotateY(180deg);
}

.card-tag {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(6, 182, 212, 0.12);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  display: inline-block;
  align-self: flex-start;
}

.card-main-content {
  text-align: center;
  margin: auto 0;
}

.card-word {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.2;
}

.card-word-answer {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #a5b4fc;
  margin-bottom: 12px;
  line-height: 1.2;
}

.card-word-ru {
  font-size: 2rem;
  font-weight: 800;
  color: #38bdf8;
  margin-bottom: 10px;
  line-height: 1.3;
}

.card-synonyms {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 8px;
}

.card-hint, .card-back-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.card-footer {
  display: flex;
  justify-content: center;
}

.btn-card-audio {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-card-audio:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ==========================================================================
   LIGHT THEME OVERRIDES (Clean, Modern, Apple/Linear aesthetic)
   ========================================================================== */

body.light-theme .card-face {
  box-shadow: 0 12px 32px -4px rgba(0, 0, 0, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
}

body.light-theme .card-front {
  background: linear-gradient(145deg, #ffffff 60%, #f8fafc);
  border: 1px solid #e2e8f0;
}

body.light-theme .card-back {
  background: linear-gradient(145deg, #f8fafc 40%, #eef2ff);
  border: 1px solid #c7d2fe;
}

body.light-theme .card-word {
  color: #0f172a;
}

body.light-theme .card-word-answer {
  color: #4338ca;
}

body.light-theme .card-word-ru {
  color: #0284c7;
}

body.light-theme .card-tag {
  color: #4f46e5;
  background: #eef2ff;
}

body.light-theme .card-hint,
body.light-theme .card-back-hint {
  color: #64748b;
}

body.light-theme .card-synonyms {
  color: #475569;
}

body.light-theme .btn-card-audio {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #1e293b;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

body.light-theme .btn-card-audio:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

body.light-theme .card-direction-toggles {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

body.light-theme .card-dir-toggle {
  color: #64748b;
}

body.light-theme .card-dir-toggle.active {
  background: #ffffff;
  color: #0f172a;
  border-color: #cbd5e1;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

body.light-theme .btn-icon-sm {
  color: #64748b;
}

body.light-theme .btn-flip-action {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #0f172a;
}

body.light-theme .btn-flip-action:hover {
  background: #f8fafc;
}

body.light-theme .btn-repeat {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
}

body.light-theme .btn-repeat:hover {
  background: #fee2e2;
}

body.light-theme .btn-know {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #16a34a;
}

body.light-theme .btn-know:hover {
  background: #dcfce7;
}

body.light-theme .quiz-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.06);
}

body.light-theme .prompt-text {
  color: #0f172a;
}

body.light-theme .prompt-hint-label {
  color: #64748b;
}

body.light-theme .prompt-subtext {
  color: #64748b;
}

body.light-theme .quiz-input {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.03);
}

body.light-theme .quiz-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

body.light-theme .hint-preview {
  background: #fefce8;
  border-color: #fef08a;
}

body.light-theme .hint-mask {
  color: #854d0e;
}

body.light-theme .btn-secondary {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #334155;
}

body.light-theme .btn-secondary:hover {
  background: #f8fafc;
  color: #0f172a;
}

body.light-theme .word-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

body.light-theme .word-card:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

body.light-theme .word-card-en {
  color: #0f172a;
}

body.light-theme .word-card-ru {
  color: #475569;
}

body.light-theme .btn-word-audio {
  background: #f1f5f9;
  border-color: #e2e8f0;
  color: #334155;
}

body.light-theme .btn-word-audio:hover {
  background: var(--primary);
  color: #ffffff;
}

body.light-theme .dict-search-input {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #0f172a;
}

body.light-theme .block-tab {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  color: #475569;
}

body.light-theme .block-tab:hover {
  background: #f8fafc;
  color: #0f172a;
}

body.light-theme .block-tab.active {
  background: #eef2ff;
  border-color: #6366f1;
  color: #4338ca;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

body.light-theme .block-badge {
  background: #f1f5f9;
  color: #64748b;
}

body.light-theme .block-tab.active .block-badge {
  background: #6366f1;
  color: #ffffff;
}

body.light-theme .nav-tabs {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

body.light-theme .nav-tab {
  color: #64748b;
}

body.light-theme .nav-tab.active {
  background: #6366f1;
  color: #ffffff;
}

body.light-theme .btn-icon,
body.light-theme .btn-icon-pill {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}

body.light-theme .btn-icon:hover,
body.light-theme .btn-icon-pill:hover {
  background: #f8fafc;
}

body.light-theme .stat-pill {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #475569;
}

body.light-theme .modal-dialog {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

body.light-theme .phone-link-card {
  background: #f8fafc;
  border-color: #e2e8f0;
}

body.light-theme .phone-link-card code {
  color: #2563eb;
}

body.light-theme .step-num {
  background: #eef2ff;
  border-color: #c7d2fe;
  color: #4f46e5;
}

body.light-theme .results-card {
  background: #ffffff;
  border-color: #e2e8f0;
}

body.light-theme .result-stat-card {
  background: #f8fafc;
  border-color: #e2e8f0;
}

body.light-theme .results-mistakes-section {
  background: #f8fafc;
  border-color: #e2e8f0;
}

body.light-theme .mistake-item {
  background: #ffffff;
  border-color: #e2e8f0;
}

body.light-theme .mistake-en {
  color: #0f172a;
}

body.light-theme .mistake-ru {
  color: #475569;
}

body.light-theme .quiz-mode-toggles {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

body.light-theme .mode-toggle {
  color: #64748b;
}

body.light-theme .mode-toggle.active {
  background: #ffffff;
  color: #0f172a;
  border-color: #cbd5e1;
}

/* Card Rating Buttons */
.card-rating-buttons {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 14px;
}

.btn-rate {
  border: none;
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-sans);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-rate-icon {
  font-size: 1.5rem;
}

.btn-rate-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-rate-text .title {
  font-size: 1rem;
  font-weight: 700;
}

.btn-rate-text .shortcut {
  font-size: 0.72rem;
  opacity: 0.75;
}

.btn-repeat {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: #f87171;
}

.btn-repeat:hover {
  background: rgba(239, 68, 68, 0.25);
  transform: translateY(-2px);
}

.btn-flip-action {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
}

.btn-flip-action:hover {
  background: var(--bg-surface-hover);
  transform: translateY(-2px);
}

.btn-know {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: #34d399;
}

.btn-know:hover {
  background: rgba(16, 185, 129, 0.25);
  transform: translateY(-2px);
}

.keyboard-hints {
  text-align: center;
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   VIEW 3: DICTIONARY / EXPLORER
   ========================================================================== */

.dict-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  font-size: 1rem;
}

.dict-search-input {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 40px 12px 42px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.dict-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-search-clear {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.dict-count-pill {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
}

.words-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.word-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  transition: all var(--transition-fast);
}

.word-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
  background: var(--bg-surface-hover);
}

.word-card-content {
  flex: 1;
  min-width: 0;
}

.word-card-en {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: normal;
  word-break: break-word;
  line-height: 1.35;
}

.word-card-ru {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
  white-space: normal;
  word-break: break-word;
  line-height: 1.35;
}

.word-card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-word-audio {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.btn-word-audio:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ==========================================================================
   MODAL: PHONE / WI-FI QR
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
  animation: fadeIn 0.2s ease forwards;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  max-width: 460px;
  width: 100%;
  padding: 28px;
  box-shadow: var(--shadow-lg);
  animation: modalPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes modalPop {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-icon {
  font-size: 1.8rem;
}

.modal-title-group h3 {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.2;
}

.modal-title-group p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.btn-modal-close {
  background: var(--bg-surface-elevated);
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.btn-modal-close:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.qr-code-frame {
  width: 220px;
  height: 220px;
  background: white;
  border-radius: var(--radius-md);
  margin: 0 auto 20px;
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  position: relative;
}

.qr-code-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.phone-link-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 20px;
}

.link-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 6px;
}

.link-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.link-box code {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.btn-copy {
  background: var(--primary);
  border: none;
  color: white;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.connection-guide {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.guide-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.step-num {
  width: 20px;
  height: 20px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-cyan);
  margin-top: 2px;
}

.step-text {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.w-full {
  width: 100%;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px) scale(0.9); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Helpers */
.hidden {
  display: none !important;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 768px) {
  .app-container {
    padding: 0 12px 60px;
  }

  .hide-mobile {
    display: none !important;
  }

  .header {
    padding: 10px 0;
    flex-wrap: wrap;
    gap: 10px;
  }

  .header-left {
    flex: 1;
  }

  .header-center {
    order: 3;
    width: 100%;
  }

  .nav-tabs {
    width: 100%;
    display: flex;
  }

  .nav-tab {
    flex: 1;
    padding: 8px 4px;
    font-size: 0.78rem;
    justify-content: center;
  }

  .quiz-card {
    padding: 20px 16px;
  }

  .prompt-text {
    font-size: 1.65rem;
  }

  .quiz-input {
    font-size: 1.15rem;
    padding: 14px 40px 14px 16px;
  }

  /* Mobile quiz action buttons */
  .quiz-btn-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .quiz-btn-row .btn-primary {
    grid-column: 1 / -1;
    order: -1;
    padding: 16px;
    font-size: 1.1rem;
  }

  /* Mobile test options grid */
  .test-options-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    margin: 20px 0 16px;
  }

  .test-option-btn {
    padding: 14px 16px;
    gap: 12px;
  }

  .test-option-text {
    font-size: 1.02rem;
  }

  /* Mobile flashcards rating buttons */
  .card-rating-buttons {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .btn-flip-action {
    grid-column: 1 / -1;
    order: -1;
    padding: 14px;
  }

  .card-word {
    font-size: 1.9rem;
  }

  .card-word-ru {
    font-size: 1.5rem;
  }

  .card-face {
    padding: 20px;
  }

  .flashcard-scene {
    min-height: 270px;
  }

  .flashcard {
    min-height: 270px;
  }

  .results-stats-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .modal-dialog {
    padding: 20px 16px;
  }

  .qr-code-frame {
    width: 180px;
    height: 180px;
  }
}