/* Lifespan Psychology Study Companion - Stylesheet */

:root {
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #eff6ff;
  --secondary: #0d9488;
  --secondary-light: #f0fdfa;
  --success: #15803d;
  --success-light: #f0fdf4;
  --warning: #b45309;
  --warning-light: #fefce8;
  --danger: #b91c1c;
  --danger-light: #fef2f2;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #93c5fd;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

/* App Header */
.app-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

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

.brand-icon {
  font-size: 28px;
}

.brand-title {
  font-size: 19px;
  font-weight: 700;
  color: #0f172a;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Module Bar (Top Nav) */
.module-nav-container {
  background: #f1f5f9;
  border-bottom: 1px solid var(--border-color);
  padding: 8px 16px;
  overflow-x: auto;
  white-space: nowrap;
}

.module-nav-list {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  gap: 8px;
}

.module-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: #334155;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.module-nav-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

.module-nav-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 4px rgba(29, 78, 216, 0.25);
}

.module-nav-btn .active-badge {
  background: #22c55e;
  color: #ffffff;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 700;
  margin-left: 4px;
}

/* Main Container */
.main-content {
  max-width: 1300px;
  margin: 20px auto;
  padding: 0 20px 40px;
}

/* Progress Stats Ribbon */
.stats-ribbon {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.stats-group {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a;
}

.progress-bar-container {
  flex-grow: 1;
  max-width: 280px;
  min-width: 180px;
}

.progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 4px;
  color: var(--text-muted);
}

.progress-track {
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--success);
  transition: width 0.3s ease;
}

/* Module Banner */
.module-banner {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
}

.module-banner h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
}

.module-banner .banner-subtitle {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 8px;
}

.module-banner .banner-meta {
  font-size: 13px;
  opacity: 0.8;
}

/* Sub-tabs Navigation */
.subtabs-bar {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 24px;
  gap: 8px;
  overflow-x: auto;
}

.subtab-btn {
  padding: 12px 18px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.subtab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Tab Panes */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

/* Theoretical Pillars */
.section-heading {
  font-size: 18px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.pillar-card {
  border-left: 4px solid var(--secondary);
  background: #fbfdff;
}

.pillar-author {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 4px;
}

.pillar-title {
  font-size: 15px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 8px;
}

.pillar-summary {
  font-size: 13px;
  color: #475569;
  line-height: 1.5;
}

/* Tables */
.table-responsive {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #ffffff;
  margin-bottom: 24px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  text-align: left;
}

.table th {
  background: #f8fafc;
  color: #334155;
  font-weight: 700;
  padding: 12px 14px;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 14px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover {
  background-color: #fafcff;
}

/* Badges & Tags */
.badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  white-space: nowrap;
}

.badge-primary { background: #dbeafe; color: #1e40af; }
.badge-secondary { background: #e2e8f0; color: #334155; }
.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef9c3; color: #854d0e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-light { background: #f1f5f9; color: #475569; }

.disorder-name-cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 160px;
}

.age-tag {
  font-size: 11px;
  color: var(--text-muted);
}

.criteria-list, .factors-list, .treatment-list {
  padding-left: 18px;
  margin-bottom: 6px;
}

.criteria-list li, .factors-list li, .treatment-list li {
  margin-bottom: 5px;
  line-height: 1.45;
}

.how-to-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 12.5px;
  margin-top: 8px;
}

.how-to-box ul {
  padding-left: 16px;
  margin-top: 4px;
}

.clinical-pearl {
  background: #fefce8;
  border-left: 3px solid #eab308;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  margin-top: 8px;
  color: #713f12;
}

/* Interactive Differential Tool */
.diff-intro-box {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.diff-intro-box h3 {
  font-size: 16px;
  color: #1e3a8a;
  margin-bottom: 4px;
}

.diff-intro-box p {
  font-size: 13.5px;
  color: #1e40af;
}

.diff-presets-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  align-items: center;
}

.preset-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

.btn-preset {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-preset:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.diff-chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.diff-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.diff-chip:hover {
  border-color: var(--primary);
  background: #f8fafc;
}

.diff-chip.active {
  background: #eff6ff;
  border-color: var(--primary);
  color: var(--primary);
}

.diff-chip input[type="checkbox"] {
  cursor: pointer;
}

.diff-empty-state {
  text-align: center;
  padding: 48px 24px;
  background: #ffffff;
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  margin-top: 10px;
}

.single-disorder-card {
  border-top: 4px solid var(--secondary);
  animation: fadeIn 0.25s ease;
}

.single-disorder-header {
  margin-bottom: 14px;
}

.single-symptom-table td {
  padding: 10px 14px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.diff-result-card {
  border-top: 4px solid var(--primary);
  animation: fadeIn 0.25s ease;
}

.diff-header {
  margin-bottom: 16px;
}

.diff-header h3 {
  font-size: 18px;
  color: #0f172a;
}

.diff-commonality {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 4px;
}

.diff-section-title {
  font-size: 15px;
  font-weight: 700;
  color: #1e293b;
  margin: 18px 0 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-color);
}

.diff-compare-table td.col-a {
  background: #f8fafc;
}

.diff-compare-table td.col-b {
  background: #ffffff;
}

.rule-box-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.rule-box {
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
}

.rule-box h4 {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
}

.rule-box-a {
  background: #eff6ff;
  border-left: 4px solid var(--primary);
  color: #1e3a8a;
}

.rule-box-b {
  background: #f0fdfa;
  border-left: 4px solid var(--secondary);
  color: #134e4a;
}

.rule-box-pitfall {
  background: #fefce8;
  border-left: 4px solid #eab308;
  color: #713f12;
}

.tx-compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.tx-box {
  padding: 16px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
}

.tx-box h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tx-box-a {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
}

.tx-box-b {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #14532d;
}

.pearl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.pearl-card-item {
  background: #fafaf9;
  border-left: 3px solid #d97706;
}

.pearl-card-item h4 {
  font-size: 14px;
  margin-bottom: 6px;
}

.pearl-card-item p {
  font-size: 13px;
  color: #44403c;
}

/* Scenario Cards & Quiz Engine */
.scenario-card {
  border-top: 4px solid #0284c7;
  margin-bottom: 28px;
}

.scenario-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.age-badge {
  background: #e0f2fe;
  color: #0369a1;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
}

.scenario-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: #0f172a;
  margin-top: 4px;
}

.attempt-tracker-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 12px;
}

.attempt-counts {
  display: flex;
  gap: 8px;
}

.vignette-text {
  background: #f1f5f9;
  border-left: 4px solid #64748b;
  padding: 14px 16px;
  border-radius: 4px;
  font-size: 14px;
  color: #1e293b;
  line-height: 1.6;
  margin-bottom: 20px;
}

.quiz-step {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.quiz-step.locked {
  opacity: 0.5;
  pointer-events: none;
}

.step-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  background: #eff6ff;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.step-prompt {
  font-size: 15px;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 12px;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.option-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #ffffff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  font-size: 13.5px;
  line-height: 1.45;
  transition: all 0.15s ease;
}

.option-label:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

.option-label input[type="radio"] {
  margin-top: 3px;
  cursor: pointer;
}

.option-label.correct-highlight {
  background: var(--success-light);
  border-color: var(--success);
  color: #14532d;
  font-weight: 600;
  box-shadow: 0 0 0 2px rgba(22, 101, 52, 0.2);
}

.option-label.incorrect-highlight {
  background: #fef2f2;
  border-color: #f87171;
  color: #991b1b;
  opacity: 0.65;
  cursor: not-allowed;
  text-decoration: line-through;
  position: relative;
}

.option-label.incorrect-highlight::after {
  content: "❌ Incorrect — Ruled Out";
  font-size: 11px;
  font-weight: 700;
  color: #b91c1c;
  margin-left: auto;
  text-decoration: none;
  display: inline-block;
  padding: 2px 6px;
  background: #fee2e2;
  border-radius: 4px;
}

.step-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.feedback-box {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  line-height: 1.5;
}

.feedback-success {
  background: var(--success-light);
  border: 1px solid #bbf7d0;
  color: #14532d;
}

.feedback-danger {
  background: var(--danger-light);
  border: 1px solid #fecaca;
  color: #7f1d1d;
}

.feedback-warning-guess {
  background: #fefce8;
  border: 1px solid #fde047;
  color: #854d0e;
}

.hint-pill {
  margin-top: 10px;
  background: #ffffff;
  border-left: 3px solid #eab308;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 13px;
  color: #713f12;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.differential-tip {
  margin-top: 8px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.6);
  padding: 6px 10px;
  border-radius: 4px;
}

/* Short Answer & Essay */
.sa-card {
  margin-bottom: 24px;
}

.sa-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.time-badge {
  font-size: 12px;
  color: var(--text-muted);
  background: #f1f5f9;
  padding: 3px 8px;
  border-radius: 4px;
}

.sa-prompt {
  font-size: 15px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 14px;
}

.sa-editor-box textarea, .essay-editor-wrapper textarea {
  width: 100%;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.55;
  padding: 12px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  resize: vertical;
  margin-top: 6px;
  margin-bottom: 10px;
}

.sa-editor-box textarea:focus, .essay-editor-wrapper textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.sa-save-bar, .essay-action-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.save-status {
  font-size: 12px;
}

.model-answer-box {
  margin-top: 18px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 16px;
}

.criteria-section h5, .model-text-section h5 {
  font-size: 14px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 8px;
}

.criteria-section ul {
  padding-left: 18px;
  font-size: 13.5px;
  margin-bottom: 14px;
}

.criteria-section li {
  margin-bottom: 4px;
}

.model-content {
  font-size: 13.5px;
  line-height: 1.6;
  color: #334155;
  background: #ffffff;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid #e2e8f0;
  margin-bottom: 14px;
}

.self-score-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  background: #ffffff;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid #e2e8f0;
}

.rating-buttons {
  display: flex;
  gap: 6px;
}

.rating-btn {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.rating-btn:hover {
  background: #e2e8f0;
}

.rating-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* Essay Section */
.essay-card {
  border-top: 4px solid var(--secondary);
}

.essay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.essay-prompt-box {
  background: #f0fdfa;
  border-left: 4px solid var(--secondary);
  padding: 16px;
  border-radius: 4px;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.editor-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  font-size: 13px;
}

.essay-model-container {
  margin-top: 24px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 20px;
}

.rubric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin: 12px 0 20px;
}

.rubric-item-card {
  padding: 12px;
  margin-bottom: 0;
  background: #ffffff;
}

.rubric-title label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13.5px;
}

.rubric-indicators {
  font-size: 12.5px;
  color: #475569;
  margin-top: 6px;
  padding-left: 24px;
}

.model-outline-content {
  background: #ffffff;
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid #e2e8f0;
  font-size: 13.5px;
  line-height: 1.65;
  color: #334155;
  max-height: 600px;
  overflow-y: auto;
}

.model-outline-content h3 {
  font-size: 16px;
  color: var(--primary);
  margin-top: 14px;
  margin-bottom: 6px;
}

.model-outline-content h4 {
  font-size: 14px;
  color: #1e293b;
  margin-top: 10px;
  margin-bottom: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13.5px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

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

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

.btn-primary:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

.btn-secondary {
  background: #e2e8f0;
  color: #334155;
}

.btn-secondary:hover {
  background: #cbd5e1;
}

.btn-outline-primary {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

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

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

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 24px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.modal-header h3 {
  font-size: 18px;
  color: #0f172a;
}

.close-btn {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 4px;
}

.form-group input {
  width: 100%;
  padding: 8px 12px;
  font-size: 13.5px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.modal-section-title {
  font-size: 14px;
  font-weight: 700;
  color: #0f172a;
  margin: 18px 0 10px;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* Preview Card */
.preview-card {
  padding: 30px;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.preview-icon {
  font-size: 40px;
}

.prototype-notice-box {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.notice-badge {
  background: #166534;
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.preview-details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

.preview-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.preview-box h3 {
  font-size: 14px;
  color: #1e3a8a;
  margin-bottom: 8px;
}

.preview-box p {
  font-size: 13.5px;
  line-height: 1.5;
  color: #334155;
}

.preview-box-full {
  grid-column: 1 / -1;
}

/* Utilities */
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-info { color: var(--primary); }

@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .stats-ribbon { flex-direction: column; align-items: flex-start; }
  .progress-bar-container { width: 100%; max-width: none; }
}