/* ============================================================
   English Study App — Styles
   Aviation Industry + Business English Focus
   ============================================================ */

/* ── RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #1a3a5c;
  --primary-light: #2c5282;
  --primary-lighter: #e8f0fe;
  --accent: #e67e22;
  --accent-light: #f39c49;
  --success: #27ae60;
  --success-light: #d4efdf;
  --danger: #e74c3c;
  --danger-light: #fadbd8;
  --warning: #f39c12;
  --warning-light: #fef5e7;
  --info: #3498db;
  --info-light: #d6eaf8;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #868e96;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── NAVIGATION ───────────────────────────────────────────── */
.navbar {
  background: var(--primary);
  color: white;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}

.navbar-brand span {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: white;
  background: rgba(255,255,255,0.15);
}

.nav-links a .nav-icon {
  font-size: 1.1rem;
}

.streak-badge {
  background: var(--accent);
  color: white;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Mobile menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ── MAIN LAYOUT ──────────────────────────────────────────── */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.page-section {
  display: none;
}

.page-section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

/* ── DASHBOARD ────────────────────────────────────────────── */
.welcome-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.welcome-banner::after {
  content: '✈️';
  position: absolute;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 5rem;
  opacity: 0.15;
}

.welcome-banner h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.welcome-banner p {
  opacity: 0.9;
  font-size: 1rem;
  max-width: 600px;
}

.level-badge {
  display: inline-block;
  background: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 0.75rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: white;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-card .stat-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.stat-card .stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-top: 0.25rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.quick-action-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.quick-action-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lighter);
  transform: translateY(-2px);
}

.quick-action-card .card-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.quick-action-card h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.quick-action-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
}

.card-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.75rem;
}

.card-tag.speaking { background: #e8f5e9; color: #2e7d32; }
.card-tag.writing { background: #e3f2fd; color: #1565c0; }
.card-tag.reading { background: #fff3e0; color: #e65100; }
.card-tag.vocabulary { background: #f3e5f5; color: #7b1fa2; }
.card-tag.grammar { background: #fce4ec; color: #c62828; }

/* ── SECTION HEADERS ─────────────────────────────────────── */
.section-header {
  margin-bottom: 2rem;
}

.section-header h2 {
  font-size: 1.5rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header p {
  color: var(--gray-600);
  margin-top: 0.25rem;
}

.section-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.section-tabs .tab-btn {
  padding: 0.5rem 1.25rem;
  border: 2px solid var(--gray-300);
  border-radius: 25px;
  background: white;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
  color: var(--gray-700);
}

.section-tabs .tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.section-tabs .tab-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ── ARTICLE CARDS ───────────────────────────────────────── */
.article-list {
  display: grid;
  gap: 1.5rem;
}

.article-card {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.article-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.article-card-header .article-icon {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-lighter);
  border-radius: var(--radius-sm);
}

.article-card-header .article-info h3 {
  font-size: 1rem;
  color: var(--gray-800);
  line-height: 1.4;
}

.article-card-header .article-meta {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: var(--gray-500);
}

.article-card-body {
  padding: 1.25rem 1.5rem;
}

.article-card-body p {
  font-size: 0.9rem;
  color: var(--gray-600);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-footer {
  padding: 0.75rem 1.5rem;
  display: flex;
  gap: 0.5rem;
  border-top: 1px solid var(--gray-200);
}

.tag {
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.tag-category { background: var(--info-light); color: var(--info); }
.tag-difficulty { background: var(--warning-light); color: var(--warning); }

/* ── ARTICLE DETAIL VIEW ──────────────────────────────────── */
.article-detail {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.article-detail-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 2rem;
}

.article-detail-header .back-btn {
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  transition: var(--transition);
}

.article-detail-header .back-btn:hover {
  background: rgba(255,255,255,0.25);
}

.article-detail-header h2 {
  font-size: 1.5rem;
  line-height: 1.4;
}

.article-detail-content {
  padding: 2rem;
}

.article-text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--gray-700);
  margin-bottom: 2rem;
  white-space: pre-line;
}

/* Vocabulary Section */
.vocab-section,
.quiz-section,
.discussion-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 2px solid var(--gray-200);
}

.vocab-section h3,
.quiz-section h3,
.discussion-section h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.vocab-card {
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  border-left: 4px solid var(--primary);
}

.vocab-card .vocab-word {
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
}

.vocab-card .vocab-def {
  color: var(--gray-700);
  margin-top: 0.25rem;
  font-size: 0.9rem;
}

.vocab-card .vocab-example {
  color: var(--gray-600);
  font-style: italic;
  margin-top: 0.35rem;
  font-size: 0.85rem;
}

.vocab-example::before {
  content: '💬 ';
}

/* ── QUIZ ─────────────────────────────────────────────────── */
.quiz-question {
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.quiz-question p {
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--gray-800);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quiz-option {
  padding: 0.75rem 1rem;
  background: white;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
}

.quiz-option:hover:not(.selected):not(.correct):not(.incorrect) {
  border-color: var(--primary);
  background: var(--primary-lighter);
}

.quiz-option.selected {
  border-color: var(--primary);
  background: var(--primary-lighter);
}

.quiz-option.correct {
  border-color: var(--success);
  background: var(--success-light);
}

.quiz-option.incorrect {
  border-color: var(--danger);
  background: var(--danger-light);
}

.quiz-explanation {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--info-light);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--gray-700);
  display: none;
}

.quiz-explanation.show {
  display: block;
}

/* ── DISCUSSION PROMPTS ──────────────────────────────────── */
.discussion-prompt {
  background: var(--gray-50);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.discussion-prompt::before {
  content: '💬';
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ── MEETING SCENARIOS ───────────────────────────────────── */
.scenario-card {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.scenario-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.scenario-card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.scenario-card-header h3 {
  color: var(--primary);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.scenario-card-header p {
  color: var(--gray-600);
  font-size: 0.9rem;
}

.scenario-detail {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.scenario-detail-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 2rem;
}

.scenario-detail-content {
  padding: 2rem;
}

/* Key Phrases */
.phrase-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.phrase-card:hover {
  background: var(--primary-lighter);
}

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

.phrase-card .phrase-usage {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 0.15rem;
}

.phrase-card .phrase-example {
  font-size: 0.85rem;
  color: var(--gray-600);
  font-style: italic;
  margin-top: 0.25rem;
}

/* Dialogue */
.dialogue-container {
  margin: 1.5rem 0;
}

.dialogue-line {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: flex-start;
}

.dialogue-speaker {
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  white-space: nowrap;
  min-width: 80px;
  text-align: center;
}

.dialogue-speaker.you {
  background: var(--primary);
  color: white;
}

.dialogue-speaker.other {
  background: var(--gray-300);
  color: var(--gray-700);
}

.dialogue-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--gray-50);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  flex: 1;
}

/* ── WRITING SECTION ─────────────────────────────────────── */
.writing-card {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.writing-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.writing-card-header {
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.writing-card-header h3 {
  color: var(--primary);
  font-size: 1.05rem;
}

.writing-detail {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.writing-detail-header {
  background: linear-gradient(135deg, #1565c0, #42a5f5);
  color: white;
  padding: 2rem;
}

.writing-detail-content {
  padding: 2rem;
}

.writing-tips {
  background: var(--info-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.writing-tips h4 {
  color: var(--info);
  margin-bottom: 0.5rem;
}

.writing-tips ul {
  list-style: none;
  padding: 0;
}

.writing-tips li {
  padding: 0.3rem 0;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.writing-tips li::before {
  content: '✓ ';
  color: var(--info);
  font-weight: bold;
}

.writing-template {
  background: var(--gray-100);
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  margin: 1rem 0;
  border-left: 4px solid var(--gray-400);
}

.writing-area {
  width: 100%;
  min-height: 300px;
  padding: 1.25rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  line-height: 1.7;
  resize: vertical;
  transition: var(--transition);
}

.writing-area:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,58,92,0.1);
}

.writing-area::placeholder {
  color: var(--gray-400);
}

.sample-answer {
  background: var(--success-light);
  border: 2px solid var(--success);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1rem;
  display: none;
  white-space: pre-wrap;
  font-size: 0.9rem;
  line-height: 1.7;
}

.sample-answer.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.sample-answer h4 {
  color: var(--success);
  margin-bottom: 0.75rem;
}

/* ── SPEAKING SECTION ────────────────────────────────────── */
.speaking-card {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: var(--transition);
  cursor: pointer;
}

.speaking-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.speaking-card .speaking-category {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.speaking-card h3 {
  color: var(--primary);
  margin-top: 0.25rem;
  font-size: 1.05rem;
}

.speaking-card .speaking-prompt {
  color: var(--gray-600);
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.speaking-detail {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.speaking-detail-header {
  background: linear-gradient(135deg, #2e7d32, #66bb6a);
  color: white;
  padding: 2rem;
}

.speaking-detail-content {
  padding: 2rem;
}

.timer-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 1.5rem 0;
}

.timer-display {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
}

.timer-display.warning {
  color: var(--warning);
}

.timer-display.danger {
  color: var(--danger);
}

.recording-indicator {
  display: none;
  align-items: center;
  gap: 0.5rem;
  color: var(--danger);
  font-weight: 600;
  margin: 1rem 0;
  justify-content: center;
}

.recording-indicator.active {
  display: flex;
}

.recording-dot {
  width: 12px;
  height: 12px;
  background: var(--danger);
  border-radius: 50%;
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.speech-transcript {
  background: var(--gray-50);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  min-height: 100px;
  margin: 1rem 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

.speech-transcript.active {
  border-color: var(--danger);
}

.expression-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.expression-chip {
  background: var(--primary-lighter);
  color: var(--primary);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ── INTERVIEW SECTION ───────────────────────────────────── */
.interview-card {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: var(--transition);
  cursor: pointer;
}

.interview-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.interview-card .interview-category {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

.interview-card h3 {
  color: var(--primary);
  margin-top: 0.25rem;
  font-size: 1.1rem;
}

.interview-detail {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.interview-detail-header {
  background: linear-gradient(135deg, #6a1b9a, #ab47bc);
  color: white;
  padding: 2rem;
}

.interview-detail-content {
  padding: 2rem;
}

.interview-tip {
  background: var(--warning-light);
  border-left: 4px solid var(--warning);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.interview-tip strong {
  color: var(--warning);
}

.practice-prompt-list {
  list-style: none;
}

.practice-prompt-list li {
  padding: 0.75rem 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.practice-prompt-list li::before {
  content: '🎯';
}

.practice-prompt-list li:hover {
  background: var(--primary-lighter);
}

/* ── VOCABULARY SECTION ──────────────────────────────────── */
.idiom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.idiom-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--accent);
  transition: var(--transition);
}

.idiom-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

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

.idiom-card .idiom-meaning {
  color: var(--gray-700);
  font-size: 0.9rem;
  margin-top: 0.35rem;
}

.idiom-card .idiom-example {
  color: var(--gray-500);
  font-size: 0.85rem;
  font-style: italic;
  margin-top: 0.5rem;
}

.idiom-card .idiom-category-tag {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

/* ── GRAMMAR SECTION ─────────────────────────────────────── */
.grammar-card {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.grammar-card-header {
  background: var(--primary-lighter);
  padding: 1rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.grammar-card-header h3 {
  color: var(--primary);
  font-size: 1.05rem;
}

.grammar-card-body {
  padding: 1.5rem;
  display: none;
}

.grammar-card-body.open {
  display: block;
  animation: fadeIn 0.3s ease;
}

.grammar-card-body .grammar-explanation {
  color: var(--gray-700);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.grammar-example {
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
}

.grammar-incorrect {
  color: var(--danger);
  text-decoration: line-through;
  font-size: 0.9rem;
}

.grammar-correct {
  color: var(--success);
  font-weight: 600;
  font-size: 0.9rem;
}

.grammar-rule {
  color: var(--gray-600);
  font-size: 0.8rem;
  margin-top: 0.35rem;
  font-style: italic;
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font-primary);
}

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

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

.btn-success {
  background: var(--success);
  color: white;
}

.btn-success:hover {
  background: #219a52;
}

.btn-accent {
  background: var(--accent);
  color: white;
}

.btn-accent:hover {
  background: var(--accent-light);
}

.btn-outline {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #c0392b;
}

.btn-lg {
  padding: 0.8rem 1.75rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* ── PROGRESS BAR ────────────────────────────────────────── */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: 4px;
  overflow: hidden;
  margin: 0.5rem 0;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* ── TODAY'S CHALLENGE ───────────────────────────────────── */
.daily-challenge {
  background: linear-gradient(135deg, var(--accent), #d35400);
  color: white;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.daily-challenge h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.daily-challenge p {
  font-size: 0.95rem;
  opacity: 0.95;
  margin-bottom: 1rem;
}

/* ── WORD COUNT ───────────────────────────────────────────── */
.word-count {
  text-align: right;
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
}

/* ── TOAST NOTIFICATIONS ─────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
}

.toast {
  background: var(--gray-800);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  margin-top: 0.75rem;
  animation: slideIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 400px;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.info { border-left: 4px solid var(--info); }
.toast.warning { border-left: 4px solid var(--warning); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.show {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .main-content {
    padding: 1rem;
  }

  .welcome-banner {
    padding: 1.5rem;
  }

  .welcome-banner h1 {
    font-size: 1.25rem;
  }

  .welcome-banner::after {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .idiom-grid {
    grid-template-columns: 1fr;
  }

  .timer-display {
    font-size: 2.5rem;
  }
}

/* ── PRINT ───────────────────────────────────────────────── */
@media print {
  .navbar, .btn, .toast-container {
    display: none !important;
  }

  .main-content {
    max-width: 100%;
  }
}

/* ── SCROLLBAR ───────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* ── SEARCH / FILTER BAR ─────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
  padding: 0.6rem 1rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── EMPTY STATE ─────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--gray-500);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* ── BADGE ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-info { background: var(--info-light); color: var(--info); }


/* ── STUDY PLAN SETUP ────────────────────────────────────── */
.plan-setup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
  padding: 1rem;
}

.plan-setup-modal {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.plan-setup-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 2rem;
  text-align: center;
}

.plan-setup-header h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.plan-setup-body {
  padding: 2rem;
}

.plan-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.plan-option {
  border: 3px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  background: white;
}

.plan-option:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.plan-option.selected {
  border-color: var(--primary);
  background: var(--primary-lighter);
}

.plan-option .plan-icon {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.plan-option .plan-duration {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.1rem;
}

.plan-option .plan-desc {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.plan-option .plan-level-tag {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--accent);
  color: white;
}

/* ── GAMIFICATION: XP & LEVEL ────────────────────────────── */
.level-bar-container {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.level-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(26,58,92,0.25);
}

.level-info {
  flex: 1;
  min-width: 200px;
}

.level-info .level-title {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.level-info .level-subtitle {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-top: 0.15rem;
}

.xp-bar {
  width: 100%;
  height: 12px;
  background: var(--gray-200);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 0.5rem;
  position: relative;
}

.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #f1c40f);
  border-radius: 6px;
  transition: width 0.8s ease;
}

.xp-text {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
  text-align: right;
  font-weight: 600;
}

.level-stats-row {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.level-mini-stat {
  text-align: center;
  padding: 0.5rem 0.85rem;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}

.level-mini-stat .mini-stat-num {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.level-mini-stat .mini-stat-label {
  font-size: 0.65rem;
  color: var(--gray-500);
  text-transform: uppercase;
}

/* ── DAILY MISSIONS ──────────────────────────────────────── */
.missions-container {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  border: 2px solid transparent;
  transition: var(--transition);
}

.missions-container:hover {
  box-shadow: var(--shadow-md);
}

.missions-header {
  background: linear-gradient(135deg, var(--accent), #d35400);
  color: white;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.missions-header h3 {
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.missions-header .day-badge {
  background: rgba(255,255,255,0.25);
  padding: 0.35rem 0.85rem;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 700;
  backdrop-filter: blur(4px);
}

.missions-body {
  padding: 1.25rem 1.5rem;
}

.mission-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.65rem;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  cursor: pointer;
}

.mission-item:hover:not(.completed) {
  background: var(--primary-lighter);
  border-color: var(--primary-light);
  transform: translateX(4px);
}

.mission-item.completed {
  background: var(--success-light);
  border-color: #a3e4d7;
}

.mission-checkbox {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 3px solid var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  font-size: 0.95rem;
  font-weight: 800;
  background: white;
}

.mission-item.completed .mission-checkbox {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.mission-info {
  flex: 1;
}

.mission-info .mission-title {
  font-weight: 600;
  color: var(--gray-800);
  font-size: 0.95rem;
}

.mission-info .mission-desc {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-top: 0.15rem;
}

.mission-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mission-xp {
  background: var(--warning-light);
  color: #b9770e;
  padding: 0.25rem 0.65rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.mission-item.completed .mission-xp {
  background: var(--success);
  color: white;
}

.missions-progress {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--gray-50);
}

.missions-progress .progress-bar {
  flex: 1;
  height: 10px;
}

.missions-progress .progress-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gray-700);
  white-space: nowrap;
}

/* ── LEVEL ASSESSMENT REPORT ─────────────────────────────── */
.assessment-container {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: 2rem;
}

.assessment-hero {
  background: linear-gradient(135deg, #2b1055, #7597de);
  color: white;
  padding: 2.5rem 2rem;
  text-align: center;
  position: relative;
}

.assessment-hero h2 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.assessment-hero p {
  opacity: 0.9;
  max-width: 650px;
  margin: 0 auto;
  font-size: 0.95rem;
}

.level-score-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  background: var(--gray-50);
}

.level-score-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--gray-200);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.level-score-card.primary-card {
  border-color: var(--accent);
  box-shadow: 0 4px 15px rgba(230,126,34,0.15);
}

.level-score-card .badge-type {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--primary-lighter);
  color: var(--primary);
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
}

.level-score-card .exam-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.level-score-card .current-score {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0.4rem 0;
}

.level-score-card .baseline-score {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.level-score-card .improvement-tag {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--success-light);
  color: var(--success);
}

/* Radar & Competency Matrix */
.competency-section {
  padding: 2rem;
}

.competency-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.competency-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  background: white;
}

.competency-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.competency-header h4 {
  font-size: 0.95rem;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.competency-grade {
  font-weight: 800;
  font-size: 0.9rem;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
}

.grade-c1 { background: #d4efdf; color: #1e8449; }
.grade-b2 { background: #d6eaf8; color: #2874a6; }
.grade-b1 { background: #fcf3cf; color: #b7950b; }

.competency-desc {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.5;
  margin-top: 0.5rem;
}

/* Teacher Diagnostic Note */
.teacher-note-card {
  background: #fdfefe;
  border-left: 5px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  margin: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  border-left-width: 5px;
  border-left-color: var(--primary);
}

.teacher-note-card h4 {
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.teacher-note-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--gray-700);
  margin-bottom: 0.75rem;
}

.teacher-note-card ul {
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.teacher-note-card li {
  margin-bottom: 0.4rem;
}


/* ── DAILY GOAL-ORIENTED DASHBOARD REDESIGN ───────────────── */

/* 1. TOP SECTION: TODAY'S STATUS & HERO */
.daily-hero-container {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #1e3a8a 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.25);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.daily-hero-container::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-left-col {
  flex: 1;
  min-width: 280px;
  z-index: 1;
}

.hero-day-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  padding: 0.35rem 0.85rem;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fed7aa;
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 0.92rem;
  color: #94a3b8;
  max-width: 520px;
}

.hero-day-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.day-nav-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
}

.day-nav-btn:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* Circular Ring Chart & Streak Container */
.hero-right-col {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  z-index: 1;
  flex-wrap: wrap;
}

.ring-chart-wrapper {
  position: relative;
  width: 104px;
  height: 104px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring-chart-svg {
  transform: rotate(-90deg);
  width: 104px;
  height: 104px;
}

.ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.12);
  stroke-width: 9;
}

.ring-progress {
  fill: none;
  stroke: url(#ring-gradient);
  stroke-width: 9;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease-in-out;
}

.ring-inner-text {
  position: absolute;
  text-align: center;
  pointer-events: none;
}

.ring-inner-count {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.ring-inner-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Streak Flame Card */
.flame-streak-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-md);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 110px;
}

.flame-icon {
  font-size: 1.8rem;
  line-height: 1;
  filter: drop-shadow(0 2px 8px rgba(249, 115, 22, 0.6));
  animation: flameFlicker 2s infinite ease-in-out;
}

@keyframes flameFlicker {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

.flame-count {
  font-size: 1.25rem;
  font-weight: 800;
  color: #f97316;
  margin-top: 0.2rem;
}

.flame-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: #cbd5e1;
  text-transform: uppercase;
}

/* 2. CENTER SECTION: 2-COLUMN DASHBOARD GRID */
.daily-dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 1.75rem;
  margin-bottom: 2rem;
}

@media (max-width: 1024px) {
  .daily-dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* ── CENTER-LEFT: DAILY TO-DO LIST (PRIMARY FOCUS) ────────── */
.daily-tasks-card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  border: 1px solid #e2e8f0;
  overflow: hidden;
}

.daily-tasks-header {
  padding: 1.5rem 1.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #f1f5f9;
}

.daily-tasks-header h2 {
  font-size: 1.25rem;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tasks-subtitle {
  font-size: 0.85rem;
  color: #64748b;
  margin-top: 0.2rem;
}

.tasks-list {
  padding: 1.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* Task Item Card */
.task-item-card {
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.task-item-card:hover:not(.completed) {
  border-color: #3b82f6;
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.08);
}

.task-item-card.completed {
  background: #f8fafc;
  border-color: #cbd5e1;
  opacity: 0.65;
}

.task-item-card.completed:hover {
  opacity: 0.85;
}

.task-item-card.catchup {
  border-left: 4px solid #f59e0b;
}

.task-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
}

.task-checkbox-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid #94a3b8;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition);
  color: white;
  font-weight: 800;
  font-size: 0.95rem;
}

.task-checkbox-btn:hover {
  border-color: #10b981;
  background: #ecfdf5;
}

.task-item-card.completed .task-checkbox-btn {
  background: #10b981;
  border-color: #10b981;
}

.task-details {
  flex: 1;
}

.task-action-title {
  font-weight: 700;
  color: #1e293b;
  font-size: 0.98rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.task-item-card.completed .task-action-title {
  color: #64748b;
  text-decoration: line-through;
}

.task-desc {
  font-size: 0.82rem;
  color: #64748b;
  margin-top: 0.2rem;
  line-height: 1.4;
}

.task-meta-tags {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.4rem;
  align-items: center;
}

.task-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: 12px;
}

.badge-xp { background: #fef3c7; color: #b45309; }
.badge-time { background: #e0f2fe; color: #0369a1; }
.badge-catchup { background: #ffedd5; color: #c2410c; }

/* Call to Action Button */
.task-cta-btn {
  background: #1e40af;
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.65rem 1.15rem;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
  white-space: nowrap;
}

.task-cta-btn:hover {
  background: #1d4ed8;
  transform: translateX(2px);
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
}

.task-item-card.completed .task-cta-btn {
  background: #e2e8f0;
  color: #64748b;
  box-shadow: none;
}

.task-item-card.completed .task-cta-btn:hover {
  background: #cbd5e1;
  color: #334155;
  transform: none;
}

/* ── CENTER-RIGHT: FOCUS ZONE (POMODORO & IMMERSION) ───────── */
.focus-zone-card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  border: 1px solid #e2e8f0;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.focus-zone-header {
  margin-bottom: 1.25rem;
}

.focus-zone-header h3 {
  font-size: 1.15rem;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.focus-zone-header p {
  font-size: 0.8rem;
  color: #64748b;
  margin-top: 0.15rem;
}

.pomodoro-display-box {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.75rem 1rem;
  text-align: center;
  margin-bottom: 1.25rem;
}

.pomodoro-digits {
  font-size: 3.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #0f172a;
  letter-spacing: -0.02em;
  line-height: 1;
}

.pomodoro-digits.running {
  color: #f97316;
  text-shadow: 0 0 20px rgba(249, 115, 22, 0.2);
}

.pomodoro-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  margin-top: 0.5rem;
  letter-spacing: 0.05em;
}

.focus-duration-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.focus-tab-btn {
  flex: 1;
  padding: 0.4rem 0.2rem;
  border: 1px solid #cbd5e1;
  background: white;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
  color: #475569;
  cursor: pointer;
  transition: var(--transition);
}

.focus-tab-btn.active {
  background: #0f172a;
  color: white;
  border-color: #0f172a;
}

.btn-start-focus {
  width: 100%;
  padding: 0.85rem;
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.btn-start-focus:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.focus-stats-mini {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #64748b;
}

.focus-stats-mini strong {
  color: #0f172a;
}

/* ── 3. BOTTOM SECTION: INSIGHTS & REWARDS ────────────────── */
.daily-insights-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.75rem;
  margin-bottom: 2rem;
}

@media (max-width: 1024px) {
  .daily-insights-grid {
    grid-template-columns: 1fr;
  }
}

.weekly-graph-card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  border: 1px solid #e2e8f0;
  padding: 1.5rem 1.75rem;
}

.weekly-graph-card h3 {
  font-size: 1.15rem;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.weekly-bars-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 140px;
  margin-top: 1.5rem;
  padding: 0 0.5rem;
  border-bottom: 1px solid #e2e8f0;
}

.weekly-bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
}

.weekly-bar-track {
  width: 28px;
  height: 100px;
  background: #f1f5f9;
  border-radius: 6px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  position: relative;
}

.weekly-bar-fill {
  width: 100%;
  background: linear-gradient(180deg, #3b82f6 0%, #1d4ed8 100%);
  border-radius: 6px;
  transition: height 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.weekly-bar-col.today .weekly-bar-fill {
  background: linear-gradient(180deg, #f97316 0%, #ea580c 100%);
}

.weekly-bar-day {
  font-size: 0.75rem;
  font-weight: 700;
  color: #64748b;
  margin-top: 0.6rem;
}

.weekly-bar-col.today .weekly-bar-day {
  color: #f97316;
  font-weight: 800;
}

/* Reward Chest Card */
.reward-chest-card {
  background: linear-gradient(135deg, #f8fafc 0%, #ede9fe 100%);
  border: 1.5px solid #ddd6fe;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.reward-chest-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(124, 58, 237, 0.12);
}

.chest-icon-wrapper {
  font-size: 3.5rem;
  line-height: 1;
  margin-bottom: 0.5rem;
  filter: drop-shadow(0 4px 10px rgba(124, 58, 237, 0.3));
  transition: transform 0.3s ease;
}

.reward-chest-card:hover .chest-icon-wrapper {
  transform: scale(1.1) rotate(-5deg);
}

.chest-title {
  font-weight: 800;
  color: #4c1d95;
  font-size: 1.05rem;
}

.chest-desc {
  font-size: 0.8rem;
  color: #6d28d9;
  margin-top: 0.25rem;
}

.chest-progress-pill {
  margin-top: 0.75rem;
  background: rgba(124, 58, 237, 0.12);
  color: #5b21b6;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
}

/* ── IMMERSION MODE (DISTRACTION-FREE OVERLAY) ─────────────── */
.immersion-overlay {
  position: fixed;
  inset: 0;
  background: #090d16;
  color: white;
  z-index: 1000;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: fadeIn 0.4s ease;
}

.immersion-overlay.active {
  display: flex;
}

.immersion-top-bar {
  position: absolute;
  top: 2rem;
  left: 2rem;
  right: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-exit-immersion {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  transition: var(--transition);
}

.btn-exit-immersion:hover {
  background: rgba(255, 255, 255, 0.25);
}

.immersion-timer-box {
  text-align: center;
  max-width: 500px;
}

.immersion-timer-digits {
  font-size: 6rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #f97316;
  text-shadow: 0 0 40px rgba(249, 115, 22, 0.35);
  line-height: 1;
  margin-bottom: 1.5rem;
}

.immersion-task-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.immersion-task-card h4 {
  color: #94a3b8;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.immersion-task-card p {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

/* ── ARTICLE IMPORTER MODAL (OPTION 4) ────────────────────── */
.import-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.import-modal-overlay.active {
  display: flex;
}

.import-modal {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  padding: 2rem;
}

.import-modal h2 {
  font-size: 1.4rem;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.import-modal p {
  color: #64748b;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.import-form-group {
  margin-bottom: 1.25rem;
}

.import-form-group label {
  display: block;
  font-weight: 700;
  font-size: 0.85rem;
  color: #334155;
  margin-bottom: 0.4rem;
}

.import-form-group input,
.import-form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid #cbd5e1;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
}

.import-form-group textarea {
  min-height: 180px;
  line-height: 1.6;
}

/* ── INTERACTIVE TASK MODAL PLAYER ────────────────────────── */
.task-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 400;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.task-modal-overlay.active {
  display: flex;
  animation: fadeIn 0.25s ease;
}

.task-modal-container {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 860px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
}

.task-modal-header {
  padding: 1.5rem 2rem;
  background: #0f172a;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

.task-modal-header h3 {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.task-modal-close-btn {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.task-modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.task-modal-body {
  padding: 2rem;
}