/* ===========================
   Exam Office — Design System
   Light mode only
   =========================== */

/* ---------- Reset & Tokens ---------- */
:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #1a1f2e;
  --muted: #6b7280;
  --border: #e2e5eb;
  --border-focus: #a3bffa;
  --primary: #1a56db;
  --primary-hover: #1444b0;
  --primary-light: #e8f0fe;
  --primary-text: #ffffff;
  --success: #0d7a3e;
  --success-light: #e6f7ed;
  --warning: #c4700a;
  --warning-light: #fef3e2;
  --danger: #c41e3a;
  --danger-light: #fde8ec;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

/* ---------- Topbar ---------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.logo-icon {
  font-size: 1.4rem;
}
.logo-text {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.topbar-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg);
  padding: 4px 12px;
  border-radius: 20px;
}
.topbar-back {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  transition: color var(--transition);
}
.topbar-back:hover { color: var(--primary); }

/* ---------- Layout ---------- */
.page-wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 24px 60px;
}
.page-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}
.page-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 24px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.card-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------- Form Elements ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}
.form-group {
  display: flex;
  flex-direction: column;
}
.form-group.span-2 {
  grid-column: span 2;
}
.form-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 5px;
}
.form-label .req {
  color: var(--danger);
  margin-left: 2px;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 0.88rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08);
}
textarea {
  resize: vertical;
  min-height: 60px;
  line-height: 1.5;
}
select {
  cursor: pointer;
}

/* Field states */
.field-warning {
  border-color: var(--warning) !important;
  background: var(--warning-light) !important;
}
.field-error {
  border-color: var(--danger) !important;
}
.field-hint {
  font-size: 0.7rem;
  color: var(--danger);
  margin-top: 3px;
  display: none;
}
.field-error + .field-hint,
.show-hint .field-hint {
  display: block;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.btn:hover {
  background: var(--bg);
}
.btn-primary {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}
.btn-danger {
  color: var(--danger);
  border-color: transparent;
  background: none;
  padding: 6px 10px;
}
.btn-danger:hover {
  background: var(--danger-light);
}
.btn-sm {
  font-size: 0.78rem;
  padding: 6px 12px;
}
.btn-icon {
  width: 32px; height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

/* ---------- Tabs ---------- */
.tab-bar {
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.tab-btn {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--muted);
  border-radius: var(--radius-sm);
  padding: 8px 20px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.tab-btn .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  display: inline-block;
  margin-left: 6px;
  vertical-align: middle;
}
.dot-ok { background: var(--success); }
.dot-warn { background: var(--warning); }
.dot-err { background: var(--danger); }

/* ---------- Section Blocks ---------- */
.section-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
}
.section-header {
  background: linear-gradient(135deg, #f7f9fc, #f0f3f8);
  padding: 14px 18px;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
}
.section-header .form-group { margin-bottom: 0; }
.section-body {
  padding: 16px 18px;
}

/* ---------- Question Row ---------- */
.question-row {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid #f0f2f5;
}
.question-row:last-of-type { border-bottom: none; }
.q-number {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
  padding-top: 10px;
  text-align: center;
}
.q-number.sub {
  font-size: 0.78rem;
  color: var(--muted);
}
.q-content { flex: 1; }
.q-fields {
  display: grid;
  grid-template-columns: 80px 100px 1fr 100px auto;
  gap: 10px;
  margin-top: 8px;
  align-items: end;
}
@media (max-width: 700px) {
  .q-fields {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* PO checkboxes */
.po-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}
.po-check {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 0.68rem;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 3px;
  transition: background var(--transition);
  user-select: none;
}
.po-check:hover { background: var(--primary-light); }
.po-check input { width: 13px; height: 13px; cursor: pointer; accent-color: var(--primary); }

/* OR divider */
.or-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0;
  padding-left: 62px;
}
.or-divider::before, .or-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.or-divider span {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ---------- Totals / Footer Bar ---------- */
.footer-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.marks-display {
  font-weight: 700;
  font-size: 0.95rem;
}
.marks-ok { color: var(--success); }
.marks-bad { color: var(--danger); }

/* ---------- Toast / Messages ---------- */
.toast-area {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  pointer-events: auto;
  animation: toast-in 0.3s ease;
  max-width: 360px;
}
.toast.error { border-color: var(--danger); background: var(--danger-light); color: var(--danger); }
.toast.success { border-color: var(--success); background: var(--success-light); color: var(--success); }
.toast.warning { border-color: var(--warning); background: var(--warning-light); color: var(--warning); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- Validation badges ---------- */
.validation-panel {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 12px;
}
.validation-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  padding: 4px 0;
}
.validation-item .vi-icon {
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  flex-shrink: 0;
}
.vi-pass .vi-icon { background: var(--success-light); color: var(--success); }
.vi-fail .vi-icon { background: var(--danger-light); color: var(--danger); }
.vi-warn .vi-icon { background: var(--warning-light); color: var(--warning); }

/* ---------- Checkbox / Switch ---------- */
.check-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
}
.check-label input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

/* ---------- Misc ---------- */
.divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}
.text-muted { color: var(--muted); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-sm { font-size: 0.78rem; }
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.flex-center {
  display: flex;
  align-items: center;
  gap: 8px;
}
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 640px) {
  .page-wrap { padding: 16px 12px 40px; }
  .card { padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.span-2 { grid-column: span 1; }
  .footer-bar { flex-direction: column; align-items: stretch; }
  .tool-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Privacy Policy Modal
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 210;
  justify-content: center;
  align-items: flex-start;
  padding: 30px 16px;
  overflow-y: auto;
}
.modal-overlay.open {
  display: flex;
}
.modal-box {
  background: #ffffff;
  border-radius: 14px;
  max-width: 780px;
  width: 100%;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  margin: auto;
  border: 1px solid var(--border);
  animation: modalFadeIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalFadeIn {
  from { opacity: 0; transform: translateY(-12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}
.modal-header.header-dark {
  background: linear-gradient(135deg, #111827 0%, #1f2937 100%);
  color: #ffffff;
}
.modal-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 6px;
}
.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0 0 4px;
  color: #ffffff;
  letter-spacing: -0.01em;
}
.modal-sub {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  line-height: 1.4;
}
.modal-close-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s;
  flex-shrink: 0;
}
.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}
.modal-body {
  padding: 22px 24px;
  max-height: calc(85vh - 160px);
  overflow-y: auto;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--text);
}
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: #f8fafc;
}

/* Policy card blocks */
.policy-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 14px;
}
.policy-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 6px;
  font-size: 0.88rem;
}
.policy-pill {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 10px;
  background: #e0e7ff;
  color: #3730a3;
}
.policy-pill.pill-red {
  background: #fee2e2;
  color: #991b1b;
}
.policy-pill.pill-amber {
  background: #fef3c7;
  color: #92400e;
}
.policy-pill.pill-green {
  background: #d1fae5;
  color: #065f46;
}
.policy-text {
  margin: 0;
  font-size: 0.82rem;
  color: #475569;
  line-height: 1.6;
}
.policy-text ul {
  margin: 6px 0 0;
  padding-left: 18px;
}
.policy-text ul li {
  margin-bottom: 4px;
}

/* Institutional Footer */
.app-footer {
  margin-top: 40px;
  padding: 24px 20px 40px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.app-footer-content {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--muted);
}
.app-footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.app-footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-link-btn {
  background: none;
  border: none;
  color: var(--primary);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
  transition: color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer-link-btn:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}
.footer-dot {
  color: #cbd5e1;
}