/* ==========================================================================
   Tally Assessment Portal - Official TallyPrime & Stack Myriad Replica Styles
   ========================================================================== */

:root {
  --tally-navy: #0b2545;
  --tally-navy-dark: #07192f;
  --tally-navy-light: #133a6b;
  --tally-gold: #f5a623;
  --tally-gold-hover: #e09415;
  --tally-gold-light: #fef8ee;
  --tally-blue: #0066cc;
  --tally-blue-hover: #0052a3;
  --tally-teal: #107c41;
  --tally-teal-bg: #eafaf1;
  --bg-page: #f1f4f8;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --border-color: #dbe2ea;
  --border-light: #edf2f7;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --purple: #7c3aed;
  --purple-bg: #f5f3ff;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.tally-header {
  background: linear-gradient(135deg, var(--tally-navy-dark) 0%, var(--tally-navy) 100%);
  color: #ffffff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  border-bottom: 3px solid var(--tally-gold);
}

.tally-top-ribbon {
  background: rgba(0, 0, 0, 0.25);
  padding: 4px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #cbd5e1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ribbon-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.ribbon-brand .gold-tag {
  background: var(--tally-gold);
  color: var(--tally-navy-dark);
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ribbon-links {
  display: flex;
  gap: 16px;
}

.ribbon-links span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.header-main {
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 14px;
}

.tally-brand-icon {
  width: 40px;
  height: 40px;
  background: var(--tally-gold);
  color: var(--tally-navy-dark);
  font-weight: 900;
  font-size: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.2);
}

.brand-text h1 {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-text h1 .portal-badge {
  font-size: 11px;
  font-weight: 600;
  background: rgba(245, 166, 35, 0.15);
  border: 1px solid var(--tally-gold);
  color: var(--tally-gold);
  padding: 2px 8px;
  border-radius: 4px;
}

.brand-subtitle {
  font-size: 12px;
  color: #94a3b8;
  margin-top: 1px;
}

.brand-subtitle strong {
  color: #f1f5f9;
}

/* User Profile Badge in Header */
.student-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.08);
  padding: 6px 14px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.avatar-circle {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--tally-gold) 0%, #d48806 100%);
  color: var(--tally-navy-dark);
  font-weight: 700;
  font-size: 15px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.student-info {
  display: flex;
  flex-direction: column;
}

.student-name {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
}

.student-email {
  font-size: 11px;
  color: #94a3b8;
}

/* Timer Display */
.timer-container {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  color: var(--tally-navy);
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-weight: 700;
  border: 2px solid var(--tally-gold);
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.timer-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  display: block;
}

.timer-digits {
  font-family: "Courier New", Courier, monospace;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--tally-navy-dark);
}

.timer-warning {
  border-color: var(--warning);
  background: var(--warning-bg);
  animation: pulseWarning 1.5s infinite;
}

.timer-critical {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger) !important;
  animation: pulseCritical 0.8s infinite;
}

@keyframes pulseWarning {
  0% { transform: scale(1); }
  50% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

@keyframes pulseCritical {
  0% { transform: scale(1); box-shadow: 0 0 0 rgba(220, 38, 38, 0.4); }
  50% { transform: scale(1.03); box-shadow: 0 0 12px rgba(220, 38, 38, 0.6); }
  100% { transform: scale(1); box-shadow: 0 0 0 rgba(220, 38, 38, 0.4); }
}

/* Submit Action Button */
.btn-submit-exam {
  background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
  color: #ffffff;
  border: none;
  font-weight: 700;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
  box-shadow: 0 2px 6px rgba(22, 163, 74, 0.3);
}

.btn-submit-exam:hover {
  background: #15803d;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(22, 163, 74, 0.4);
}

/* Progress Ribbon */
.progress-ribbon {
  height: 4px;
  background: rgba(255, 255, 255, 0.15);
  width: 100%;
}

.progress-bar-fill {
  height: 100%;
  background: var(--tally-gold);
  width: 0%;
  transition: width 0.3s ease;
}

/* ==========================================================================
   Login / Authentication View
   ========================================================================== */
.login-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 20%, #173860 0%, #07192f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
}

.login-card {
  background: #ffffff;
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.login-header {
  background: linear-gradient(135deg, var(--tally-navy-dark) 0%, var(--tally-navy) 100%);
  color: #ffffff;
  padding: 24px 28px;
  text-align: center;
  position: relative;
  border-bottom: 4px solid var(--tally-gold);
}

.login-header-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.login-header h2 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 4px;
}

.login-header p {
  font-size: 13px;
  color: #94a3b8;
}

.login-body {
  padding: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-label span.req {
  color: var(--danger);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--text-main);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  outline: none;
  border-color: var(--tally-navy);
  box-shadow: 0 0 0 3px rgba(11, 37, 69, 0.15);
}

.input-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.input-hint strong {
  color: var(--tally-navy);
}

.login-alert {
  background: var(--danger-bg);
  border: 1px solid #fca5a5;
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
  align-items: center;
  gap: 8px;
}

.exam-instructions-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 12px;
}

.exam-instructions-box h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--tally-navy);
  margin-bottom: 6px;
}

.exam-instructions-box ul {
  padding-left: 18px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.btn-start-exam {
  width: 100%;
  background: linear-gradient(135deg, var(--tally-gold) 0%, var(--tally-gold-hover) 100%);
  color: var(--tally-navy-dark);
  font-size: 16px;
  font-weight: 700;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  letter-spacing: 0.3px;
}

.btn-start-exam:hover {
  background: var(--tally-gold-hover);
  box-shadow: 0 4px 10px rgba(245, 166, 35, 0.4);
  transform: translateY(-1px);
}

.login-footer {
  text-align: center;
  padding: 12px 20px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  font-size: 11px;
  color: var(--text-muted);
}

/* ==========================================================================
   Exam Workspace Layout
   ========================================================================== */
.exam-layout {
  display: flex;
  flex: 1;
  max-width: 1540px;
  margin: 0 auto;
  width: 100%;
  padding: 18px 24px;
  gap: 24px;
}

.question-workspace {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Question Header Card */
.q-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.q-card-header {
  padding: 14px 20px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.q-badge-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-qno {
  background: var(--tally-navy);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 13px;
}

.badge-type-mcq {
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-type-practical {
  background: var(--purple-bg);
  color: var(--purple);
  border: 1px solid #ddd6fe;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-marks {
  background: #f1f5f9;
  color: var(--text-muted);
  border: 1px solid #cbd5e1;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
}

.badge-status {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.status-unanswered {
  background: #f1f5f9;
  color: var(--text-muted);
}

.status-answered {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
}

.status-uploaded {
  background: var(--purple-bg);
  color: var(--purple);
  border: 1px solid #ddd6fe;
}

.status-review {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid #fde68a;
}

/* Question Body */
.q-card-body {
  padding: 24px;
  flex: 1;
}

.q-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--tally-navy-dark);
  margin-bottom: 12px;
}

.q-scenario-box {
  background: #f8fafc;
  border-left: 4px solid var(--tally-navy);
  padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 20px;
  border-top: 1px solid var(--border-light);
  border-right: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.scenario-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--tally-navy);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  display: block;
}

.scenario-text {
  font-size: 14.5px;
  color: #334155;
  line-height: 1.6;
}

.q-task-desc {
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: 20px;
  font-weight: 500;
}

/* MCQ Options */
.mcq-options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.mcq-option-label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #ffffff;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.mcq-option-label:hover {
  background: #f8fafc;
  border-color: var(--tally-navy-light);
}

.mcq-option-label.selected {
  border-color: var(--tally-navy);
  background: #f0f7ff;
  box-shadow: 0 0 0 1px var(--tally-navy);
}

.mcq-option-radio {
  margin-top: 3px;
  accent-color: var(--tally-navy);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.option-text-wrapper {
  flex: 1;
  font-size: 14.5px;
  color: var(--text-main);
  line-height: 1.4;
}

.option-marker {
  font-weight: 700;
  margin-right: 6px;
  color: var(--tally-navy);
}

/* Practical File Upload Box */
.practical-upload-section {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tally-export-guide {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 13px;
  color: #92400e;
}

.tally-export-guide strong {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: #78350f;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tally-key {
  display: inline-block;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 11px;
  color: var(--tally-navy);
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.upload-dropzone {
  border: 2px dashed #94a3b8;
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  background: #f8fafc;
  transition: all 0.2s;
  cursor: pointer;
  position: relative;
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
  border-color: var(--tally-blue);
  background: #eff6ff;
}

.upload-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  background: #e2e8f0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tally-navy);
  font-size: 24px;
}

.upload-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--tally-navy-dark);
  margin-bottom: 4px;
}

.upload-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.btn-browse {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--tally-navy);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-browse:hover {
  background: var(--tally-navy-light);
}

.file-input-hidden {
  display: none;
}

/* Uploaded File Display Card */
.uploaded-file-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  gap: 12px;
}

.file-info-group {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.file-badge-icon {
  width: 38px;
  height: 38px;
  background: #22c55e;
  color: #ffffff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 11px;
}

.file-details {
  min-width: 0;
}

.file-name {
  font-size: 14px;
  font-weight: 700;
  color: #166534;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

.file-meta {
  font-size: 11px;
  color: #15803d;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-file-action {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-main);
  transition: all 0.15s;
}

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

.btn-file-action.btn-danger-action {
  color: var(--danger);
  border-color: #fca5a5;
}

.btn-file-action.btn-danger-action:hover {
  background: var(--danger-bg);
}

/* Question Footer Controls */
.q-card-footer {
  padding: 16px 20px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-left-actions,
.footer-right-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-nav {
  padding: 9px 18px;
  font-size: 13.5px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
  border: 1px solid var(--border-color);
  background: #ffffff;
  color: var(--text-main);
}

.btn-nav:hover:not(:disabled) {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.btn-nav:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-nav-primary {
  background: var(--tally-navy);
  color: #ffffff;
  border-color: var(--tally-navy);
}

.btn-nav-primary:hover:not(:disabled) {
  background: var(--tally-navy-light);
  border-color: var(--tally-navy-light);
}

.btn-nav-review {
  background: var(--warning-bg);
  color: #92400e;
  border-color: #fde68a;
}

.btn-nav-review:hover {
  background: #fef3c7;
}

.btn-nav-clear {
  color: var(--danger);
}

/* ==========================================================================
   Question Palette (Sidebar)
   ========================================================================== */
.palette-sidebar {
  width: 360px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.palette-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.palette-header {
  padding: 14px 18px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.palette-header h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--tally-navy-dark);
}

.palette-body {
  padding: 16px;
}

/* Filter Tabs */
.palette-tabs {
  display: flex;
  gap: 4px;
  background: #f1f5f9;
  padding: 4px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.tab-btn {
  flex: 1;
  padding: 6px 8px;
  font-size: 12px;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: 3px;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
}

.tab-btn.active {
  background: #ffffff;
  color: var(--tally-navy);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Legend */
.palette-legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 10px 12px;
  background: #f8fafc;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  border: 1px solid var(--border-light);
  font-size: 11px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-bullet {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
}

.bullet-answered { background: var(--success); }
.bullet-uploaded { background: var(--purple); }
.bullet-review { background: var(--warning); }
.bullet-unanswered { background: #cbd5e1; }

/* Grid of 50 Questions */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  max-height: 380px;
  overflow-y: auto;
  padding-right: 4px;
}

.grid-q-btn {
  aspect-ratio: 1;
  border: 1px solid var(--border-color);
  background: #ffffff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.grid-q-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.grid-q-btn.current {
  outline: 2px solid var(--tally-navy);
  outline-offset: 1px;
  font-weight: 900;
}

.grid-q-btn.status-answered {
  background: var(--success);
  color: #ffffff;
  border-color: #15803d;
}

.grid-q-btn.status-uploaded {
  background: var(--purple);
  color: #ffffff;
  border-color: #6d28d9;
}

.grid-q-btn.status-review {
  background: var(--warning);
  color: #ffffff;
  border-color: #d97706;
}

.grid-q-btn.status-unanswered {
  background: #f8fafc;
  color: var(--text-muted);
}

/* Palette Summary Stats */
.palette-stats {
  padding: 14px 18px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
}

.stat-row strong {
  color: var(--text-main);
}

/* ==========================================================================
   Modals (Pre-Submit & Final Certificate Slip)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  padding: 20px;
}

.modal-dialog {
  background: #ffffff;
  width: 100%;
  max-width: 560px;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 18px 24px;
  background: var(--tally-navy);
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 3px solid var(--tally-gold);
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 700;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 24px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Submit Summary Grid */
.submit-summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.summary-card {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
}

.summary-card-val {
  font-size: 24px;
  font-weight: 800;
  color: var(--tally-navy);
}

.summary-card-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Certificate Result Slip */
.certificate-container {
  background: #ffffff;
  border: 3px double #0b2545;
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 20px;
  position: relative;
}

.cert-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-25deg);
  font-size: 58px;
  font-weight: 900;
  color: rgba(11, 37, 69, 0.04);
  pointer-events: none;
  white-space: nowrap;
}

.cert-header {
  text-align: center;
  border-bottom: 2px solid var(--tally-gold);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.cert-header h2 {
  font-size: 22px;
  color: var(--tally-navy-dark);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cert-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.cert-student-details {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 20px;
  font-size: 13.5px;
}

.cert-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px dashed #e2e8f0;
}

.cert-row:last-child {
  border-bottom: none;
}

.cert-row strong {
  color: var(--tally-navy-dark);
}

.cert-scores {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.cert-score-box {
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}

.cert-score-box.score-practical {
  background: var(--purple-bg);
  border-color: #ddd6fe;
}

.cert-score-title {
  font-size: 12px;
  font-weight: 600;
  color: #166534;
}

.cert-score-box.score-practical .cert-score-title {
  color: #5b21b6;
}

.cert-score-num {
  font-size: 28px;
  font-weight: 900;
  color: #15803d;
  margin-top: 4px;
}

.cert-score-box.score-practical .cert-score-num {
  color: var(--purple);
}

.cert-stamp-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid #e2e8f0;
  font-size: 11px;
  color: var(--text-muted);
}

.cert-sign-box {
  text-align: center;
}

.cert-sign-line {
  width: 140px;
  height: 1px;
  background: #0b2545;
  margin-bottom: 4px;
}

/* Preview Modal for HTML files */
.html-preview-frame {
  width: 100%;
  height: 480px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.tally-footer {
  margin-top: auto;
  background: var(--tally-navy-dark);
  color: #94a3b8;
  padding: 14px 24px;
  font-size: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.tally-footer a {
  color: var(--tally-gold);
  text-decoration: none;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1024px) {
  .exam-layout {
    flex-direction: column-reverse;
  }
  .palette-sidebar {
    width: 100%;
  }
  .palette-grid {
    grid-template-columns: repeat(10, 1fr);
    max-height: 200px;
  }
}

@media (max-width: 640px) {
  .header-main {
    flex-direction: column;
    align-items: flex-start;
  }
  .student-badge {
    width: 100%;
    justify-content: space-between;
  }
  .palette-grid {
    grid-template-columns: repeat(5, 1fr);
  }
  .footer-left-actions,
  .footer-right-actions {
    width: 100%;
    justify-content: space-between;
  }
}

/* ==========================================================================
   Print Styles for Certificate
   ========================================================================== */
@media print {
  body * {
    visibility: hidden;
  }
  .certificate-container,
  .certificate-container * {
    visibility: visible;
  }
  .certificate-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    border: 2px solid #000;
  }
  .modal-backdrop {
    background: transparent;
    position: static;
  }
}