@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.1);
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --accent-blue: #38bdf8;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;
  --accent-rose: #f43f5e;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-lg: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

.header {
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-tabs {
  display: flex;
  gap: 8px;
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: var(--text-main);
  background: var(--bg-card);
  border-color: rgba(99, 102, 241, 0.4);
}

.main-container {
  max-width: 1200px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1.5rem;
  flex: 1;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="text"], textarea, select {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-main);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

input[type="text"]:focus, textarea:focus, select:focus {
  outline: none;
  border-color: #6366f1;
}

textarea {
  resize: vertical;
  min-height: 180px;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
  transition: transform 0.2s ease, opacity 0.2s ease;
  width: 100%;
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.word-count-badge {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-top: 6px;
}

.badge-valid { background: rgba(52, 211, 153, 0.2); color: var(--accent-emerald); }
.badge-warning { background: rgba(251, 191, 36, 0.2); color: var(--accent-amber); }

.disclaimer-banner {
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.3);
  color: var(--accent-amber);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.overall-score-box {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(99, 102, 241, 0.3);
  margin-bottom: 1.5rem;
}

.overall-number {
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transform: translateZ(0);
  will-change: transform;
}

.criteria-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.criterion-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: var(--radius-md);
}

.criterion-card h4 {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.criterion-card .score {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 4px;
}

.drill-box {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.file-dropzone {
  border: 2px dashed var(--border-color);
  padding: 2rem;
  text-align: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.file-dropzone:hover {
  border-color: #6366f1;
}

footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

/* =============================================
   P4: Light Theme Override
   ============================================= */
body.light-theme {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #1e293b;
  --text-muted: #64748b;
  --border-color: #cbd5e1;
  --accent-primary: #4f46e5;
  --accent-secondary: #7c3aed;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
}
body.light-theme .card { background: #ffffff; border-color: #e2e8f0; box-shadow: 0 2px 12px rgba(0,0,0,0.08); color: #0f172a; }
body.light-theme .card-title, body.light-theme .card-title *, body.light-theme .card-title span, body.light-theme h1, body.light-theme h2, body.light-theme h3, body.light-theme h4, body.light-theme label { color: #0f172a !important; }
body.light-theme .header { background: rgba(255,255,255,0.9); border-color: #e2e8f0; }
body.light-theme textarea, body.light-theme input[type="text"] { background: #f8fafc; border-color: #cbd5e1; color: #0f172a; }
body.light-theme .tab-btn { color: #64748b; }
body.light-theme .tab-btn.active { color: #4f46e5; background: rgba(79,70,229,0.08); }
body.light-theme .drill-card { background: #ffffff; border-color: #e2e8f0; color: #0f172a; }
body.light-theme .tu-evidence, body.light-theme .tu-diagnosis,
body.light-theme .tu-objective, body.light-theme .tu-model {
  background: #f8fafc;
}
body.light-theme .evidence-highlight { color: #dc2626; border-color: #dc2626; }
body.light-theme .model-example { color: #16a34a; border-color: #16a34a; }
body.light-theme .phase-dot { border-color: #cbd5e1; color: #64748b; }
body.light-theme .phase-connector { background: #cbd5e1; }
body.light-theme .drill-hint { color: #d97706; }


/* =============================================
   P3: Skeleton Modal (multi-step progress)
   ============================================= */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

.skeleton-card, .modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem 2.5rem;
  min-width: 360px;
  max-width: 480px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
  position: relative;
}

.skeleton-card h3 { margin: 0 0 1.5rem 0; font-size: 1.1rem; color: var(--text-primary); }

.skeleton-step {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.25s ease;
}
.skeleton-step .step-icon {
  width: 22px; height: 22px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  border: 2px solid var(--border-color);
  background: transparent;
  transition: all 0.25s ease;
  flex-shrink: 0;
}
.skeleton-step.active { color: var(--text-primary); }
.skeleton-step.active .step-icon {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  animation: pulse-icon 1s ease-in-out infinite;
}
.skeleton-step.done { color: var(--success); }
.skeleton-step.done .step-icon {
  background: var(--success); border-color: var(--success); color: white;
}

@keyframes pulse-icon {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* =============================================
   P3: Task 1 Image Preview
   ============================================= */
#task1-preview-box {
  margin-top: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  max-width: 340px;
}
#task1-image-preview {
  display: block; width: 100%; height: auto; max-height: 220px;
  object-fit: contain; background: var(--bg-primary);
}
.clear-image-btn {
  position: absolute; top: 6px; right: 6px;
  width: 26px; height: 26px; border-radius: 50%;
  background: rgba(239,68,68,0.9); color: white;
  border: none; font-size: 0.95rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.clear-image-btn:hover { background: #dc2626; }

/* =============================================
   P3: Report Toolbar (PDF Export)
   ============================================= */
.report-toolbar {
  display: flex; justify-content: flex-end;
  padding: 0.5rem 0 0.75rem 0;
  gap: 0.5rem;
}

/* =============================================
   P4: Streak Tracker
   ============================================= */
.streak-container {
  display: flex; align-items: center; gap: 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.6rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.9rem; color: var(--text-secondary);
}
#streak-progress {
  flex: 1; height: 8px;
  border-radius: 4px; border: none;
  background: var(--bg-tertiary);
  accent-color: #f59e0b;
}
#streak-progress::-webkit-progress-bar { background: var(--bg-tertiary); border-radius: 4px; }
#streak-progress::-webkit-progress-value { background: linear-gradient(90deg,#f59e0b,#ef4444); border-radius: 4px; transition: width 0.4s ease; }

/* =============================================
   P4: Skill History Modal
   ============================================= */
.modal-card { min-width: 380px; }
.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--bg-tertiary); border: none; cursor: pointer;
  font-size: 1.1rem; color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.modal-close:hover { background: var(--danger); color: white; }

.skill-history-band-row {
  display: flex; gap: 0.4rem; margin: 0.75rem 0;
  flex-wrap: wrap;
}
.skill-history-band-chip {
  padding: 0.25rem 0.6rem; border-radius: 20px;
  font-size: 0.78rem; font-weight: 600;
  background: var(--bg-tertiary); color: var(--text-secondary);
}
.skill-history-band-chip.current { background: var(--accent-primary); color: white; }

/* =============================================
   P4: Evidence Phrase Highlighting
   ============================================= */
.evidence-phrase {
  cursor: pointer;
  text-decoration: underline dotted var(--accent-primary);
  color: var(--accent-primary);
  transition: background 0.15s;
  border-radius: 3px;
  padding: 0 2px;
}
.evidence-phrase:hover { background: rgba(99,102,241,0.12); }

/* =============================================
   P4: Theme Button
   ============================================= */
.header-actions { display: flex; align-items: center; margin-left: auto; margin-right: 1rem; }
.theme-btn {
  background: var(--bg-tertiary); border: 1px solid var(--border-color);
  border-radius: 8px; padding: 0.35rem 0.65rem;
  cursor: pointer; font-size: 1rem;
  transition: background 0.2s, transform 0.15s;
}
.theme-btn:hover { background: var(--bg-primary); transform: scale(1.08); }

/* =============================================
   P3: Print / PDF Export styles
   ============================================= */
@media print {
  header, nav, .tab-bar, .nav-tabs, .report-toolbar,
  #tab-upload, #tab-sandbox, #tab-radar, footer,
  .streak-container, #skeleton-modal, #skill-history-modal { display: none !important; }
  #tab-report { display: block !important; }
  #diagnostic-report-root { max-width: 100%; }
  body { background: white !important; color: black !important; }
  .card { box-shadow: none !important; border: 1px solid #ddd !important; break-inside: avoid; }
  .badge { border: 1px solid #aaa; }
}

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

/* =============================================
   v6.1: View System (3-tab navigation & stepper)
   ============================================= */
.view-content { display: none; }
.view-content.active { display: block; animation: fadeIn 0.3s ease; }

.practice-step { display: none; }
.practice-step.active { display: block; animation: fadeIn 0.25s ease; }

.nav-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
}
.nav-tab-btn:hover { color: var(--text-main); background: rgba(255,255,255,0.05); }
.nav-tab-btn.active {
  color: var(--text-main);
  background: var(--bg-card);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 2px 8px rgba(99,102,241,0.15);
}
body.light-theme .nav-tab-btn { color: #64748b; }
body.light-theme .nav-tab-btn.active { color: #4f46e5; background: rgba(79,70,229,0.08); }

/* =============================================
   v6.1: 3-Phase Drill Cards
   ============================================= */
.drill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-lg);
}
.drill-phase-bar {
  display: flex; align-items: center; gap: 0; justify-content: center;
  margin-bottom: 1.25rem; padding: 0.5rem 0;
}
.phase-dot {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
  border: 2px solid var(--border-color); color: var(--text-muted);
  background: transparent; transition: all 0.3s ease;
}
.phase-dot.active { border-color: var(--accent-blue); color: var(--accent-blue); background: rgba(56,189,248,0.1); }
.phase-dot.done { border-color: var(--accent-emerald); color: white; background: var(--accent-emerald); }
.phase-connector { width: 40px; height: 2px; background: var(--border-color); }
.phase-connector.done { background: var(--accent-emerald); }

.drill-phase-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text-main); }

.tu-evidence, .tu-diagnosis, .tu-objective, .tu-model {
  background: rgba(15,23,42,0.5); border-radius: 8px;
  padding: 0.75rem 1rem; margin-bottom: 0.75rem;
}
.tu-evidence small, .tu-diagnosis small, .tu-objective small, .tu-model small {
  color: var(--text-muted); font-weight: 600; display: block; margin-bottom: 4px;
}
.evidence-highlight {
  color: var(--accent-rose); font-style: italic; font-size: 0.95rem;
  border-left: 3px solid var(--accent-rose); padding-left: 8px; margin: 4px 0;
}
.model-example {
  color: var(--accent-emerald); font-style: italic; font-size: 0.95rem;
  border-left: 3px solid var(--accent-emerald); padding-left: 8px; margin: 4px 0;
}
.drill-instruction { font-weight: 600; font-size: 1rem; margin-bottom: 0.5rem; }
.drill-context {
  font-size: 0.9rem; color: var(--text-muted); font-style: italic;
  margin-bottom: 0.75rem; padding-left: 8px;
  border-left: 3px solid var(--border-color);
}
.drill-hint { font-size: 0.85rem; color: var(--accent-amber); margin-bottom: 0.75rem; }
.btn-next-phase {
  margin-top: 0.75rem; background: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
}

/* =============================================
   v6.1: Mobile First & Tablet Breakpoints
   ============================================= */
@media (max-width: 768px) {
  .header {
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
    gap: 8px;
  }
  .header .logo {
    font-size: 1rem;
    width: 100%;
    justify-content: space-between;
  }
  .nav-tabs {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 4px;
    padding-bottom: 4px;
  }
  .tab-btn, .nav-tab-btn {
    padding: 6px 12px;
    font-size: 0.8rem;
    white-space: nowrap;
    flex-shrink: 0;
    min-height: 36px;
  }
  .main-container {
    padding: 0 0.75rem;
    margin: 1rem auto;
  }
  .card {
    padding: 1.25rem;
    border-radius: 12px;
  }
  .criteria-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  .overall-number {
    font-size: 2.5rem;
  }
  .drill-box {
    padding: 1rem;
  }
  .disclaimer-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  textarea {
    min-height: 140px;
  }
  .btn-primary {
    padding: 10px 16px;
    font-size: 0.9rem;
  }
  .skeleton-card, .modal-card {
    min-width: unset;
    width: 90vw;
    max-width: 400px;
    padding: 1.5rem;
  }
  .report-toolbar {
    flex-wrap: wrap;
  }
  .streak-container {
    flex-wrap: wrap;
  }
  .repair-row {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
  }
  .repair-criterion-badge {
    align-self: flex-start;
  }
  #tutor-stepper-container {
    padding: 8px 12px !important;
  }
  #tutor-stepper-container > div {
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
  }
  .stepper-step span:last-child {
    display: none;
  }
  
  /* Touch target sizes (Apple HIG min 44px) */
  button, input, select, textarea {
    min-height: 44px;
  }
  .btn-submit-drill {
    width: 100%;
  }
  .modal-close {
    width: 40px;
    height: 40px;
  }
  .evidence-phrase {
    padding: 2px 4px;
  }
}

@media (max-width: 480px) {
  .criteria-grid {
    grid-template-columns: 1fr;
  }
  .header {
    padding: 0.5rem 0.75rem;
  }
  .overall-number {
    font-size: 2rem;
  }
  .card-title {
    font-size: 1rem;
  }
}

/* =============================================
   P5: Comprehensive Printable Report Styles
   ============================================= */
#printable-comprehensive-report {
  display: none;
}

@media print {
  body > *:not(#printable-comprehensive-report) {
    display: none !important;
  }

  body {
    background: #ffffff !important;
    color: #1e293b !important;
    font-family: Arial, Helvetica, sans-serif !important;
    font-size: 10pt !important;
    line-height: 1.5 !important;
  }

  #printable-comprehensive-report {
    display: block !important;
    position: absolute;
    top: 0; left: 0; width: 100%;
    background: #ffffff !important;
    color: #1e293b !important;
    padding: 0 !important;
  }

  .printable-report-wrapper {
    width: 100%;
    margin: 0 auto;
  }

  .print-header {
    border-bottom: 2px solid #0f172a;
    padding-bottom: 10px;
    margin-bottom: 16px;
  }
  .print-header h1 {
    font-size: 14pt;
    color: #0f172a;
    margin: 0 0 6px 0;
    text-transform: uppercase;
  }
  .print-meta {
    font-size: 9pt;
    color: #475569;
    margin: 0;
  }

  .print-section {
    margin-bottom: 18px;
    page-break-inside: avoid;
  }
  .print-section h2 {
    font-size: 11pt;
    color: #1e293b;
    border-bottom: 1px solid #cbd5e1;
    padding-bottom: 4px;
    margin: 0 0 8px 0;
    text-transform: uppercase;
  }

  .print-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 10px 14px;
    margin-top: 6px;
    font-size: 9.5pt;
  }
  .print-essay-content {
    white-space: pre-wrap;
    line-height: 1.6;
    margin-top: 6px;
  }

  .print-error-highlight {
    background-color: #ffe4e6 !important;
    color: #be123c !important;
    font-weight: bold;
    border-bottom: 2px solid #f43f5e;
    padding: 1px 3px;
    border-radius: 2px;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .print-validity-warning {
    background: #fffbeb;
    border-left: 4px solid #f59e0b;
    padding: 8px 12px;
    margin-top: 8px;
    font-size: 9pt;
  }

  .print-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 6px;
    font-size: 9pt;
  }
  .print-table th, .print-table td {
    border: 1px solid #cbd5e1;
    padding: 6px 10px;
    text-align: left;
    vertical-align: top;
  }
  .print-table th {
    background: #f1f5f9;
    color: #0f172a;
    font-weight: bold;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .print-score-badge {
    font-size: 12pt;
    font-weight: bold;
    color: #4338ca;
  }

  .print-footer {
    border-top: 1px solid #cbd5e1;
    margin-top: 24px;
    padding-top: 8px;
    text-align: center;
    font-size: 8pt;
    color: #64748b;
  }
}

/* =============================================
   Mock Test Exam Room (60-Minute Timed Mode)
   ============================================= */
.mocktest-topbar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.85rem 1.5rem;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 2px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: blur(8px);
}

.timer-display {
  font-size: 1.6rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent-blue);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-color);
  padding: 4px 14px;
  border-radius: 8px;
  min-width: 95px;
  text-align: center;
  letter-spacing: 1px;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.mocktest-task-tabs {
  display: flex;
  gap: 10px;
}

.mocktest-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  height: calc(100vh - 150px);
  min-height: 580px;
  padding: 1.25rem 0;
}

.mocktest-panel-left {
  border-right: 1px solid var(--border-color);
  padding-right: 1.5rem;
  overflow-y: auto;
}

.mocktest-panel-right {
  display: flex;
  flex-direction: column;
  height: 100%;
}

#mock-essay-input {
  flex: 1;
  width: 100%;
  resize: none;
  font-size: 1rem;
  line-height: 1.7;
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  font-family: 'Georgia', serif;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.2s;
}

#mock-essay-input:focus {
  border-color: var(--accent-blue);
}

#mock-essay-input:disabled {
  background: rgba(255, 255, 255, 0.03);
  opacity: 0.7;
  cursor: not-allowed;
}

@media (max-width: 868px) {
  .mocktest-workspace {
    grid-template-columns: 1fr;
    height: auto;
  }
  .mocktest-panel-left {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding-right: 0;
    padding-bottom: 1.5rem;
  }
}