/* VARIABLES */
:root {
  --primary-color: #e2e8f0;
  --primary-dark: #f8fafc;
  --accent-color: #0ea5e9;
  --accent-hover: #38bdf8;
  --accent-glow: rgba(14, 165, 233, 0.25);
  --light-bg: #1e293b;
  --panel-bg: #334155;
  --light-text: #94a3b8;
  --border-color: #475569;
  --danger-color: #e11d48;
  --white: #ffffff;
  --header-font: "Montserrat", sans-serif;
  --body-font: "Montserrat", sans-serif;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08);
}

/* BASE */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  font-family: var(--body-font);
  background: var(--light-bg);
  color: var(--primary-color);
  margin: 0;
  display: flex;
  flex-direction: column;
}

/* NAVBAR */
.navbar {
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1020;
}
.navbar-brand {
  color: var(--primary-dark) !important;
  font-weight: 700;
}
#brand-title {
  color: var(--primary-dark);
  margin-left: 0.5rem;
  font-weight: 700;
}
.nav-link {
  color: var(--primary-color);
}
.nav-link:hover {
  color: var(--primary-dark);
}

/* PAGE CONTAINER */
.page-container {
  padding: 2.5rem 2rem 3rem 2rem;
  position: relative;
  padding-left: 80px;
}

/* WIZARD VERTICAL */
.wizard-steps-vertical {
  position: absolute;
  left: 14px;
  top: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  z-index: 1050;
  pointer-events: none;
}
.step-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #94a3b8;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
  pointer-events: auto;
  transition: all 0.15s;
  cursor: pointer;
}
.step-dot.active {
  background: var(--accent-color);
  color: var(--white);
  transform: scale(1.05);
}
.step-dot.completed {
  background: #16a34a;
  color: #fff;
  transform: scale(1.05);
}
.step-line-vertical {
  width: 2px;
  height: 28px;
  background: var(--border-color);
  border-radius: 2px;
}

/* TITLES */
.page-title {
  font-size: 1.6rem;
  margin-bottom: 0.25rem;
}
.page-subtitle {
  color: var(--light-text);
  margin-bottom: 1rem;
}

/* SUBJECT CARD / PAGE1 */
.single-subject-container {
  max-width: 880px;
  margin: 0 auto;
}
.subject-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.subject-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}
.chapter-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 320px;
  overflow: auto;
}
.chapter-list li {
  padding: 0.4rem 0.5rem;
  border-radius: 6px;
  margin-bottom: 0.35rem;
  transition: background 0.12s ease;
}
.chapter-list li:hover {
  background: var(--light-bg);
}
.form-label {
  font-weight: 600;
  color: var(--light-text);
}

/* LIGHT-MODE HOVER FIX (subtle, not dark) */
body.light-mode .chapter-list li:hover {
  background: #f1f5f9;
}

/* BUTTONS */
.btn {
  font-weight: 600;
  border-radius: 0.5rem;
}
.btn-primary {
  background: var(--accent-color);
  border: var(--accent-color);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-hover);
}
.btn-secondary {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--primary-color);
}

/* FORMAT CARD */
.main-format-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 10px;
  margin: 1rem auto;
  max-width: 1100px;
  box-shadow: var(--shadow-sm);
}
.main-format-card input.form-control,
.main-format-card select.form-select {
  background: var(--light-bg);
  border: 1px solid var(--border-color);
  color: var(--primary-color);
}
.main-format-card select.form-select option {
  background: var(--light-bg);
  color: var(--primary-color);
}

/* CONTENT LAYOUT (STEP3) */
.content-wrapper-2-col {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  margin-top: 1rem;
  height: calc(100vh - 220px);
}
.question-bank-col {
  width: 360px;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.sidebar-header {
  font-weight: 700;
  color: var(--primary-dark);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.65rem;
  margin-bottom: 0.8rem;
}
#question-bank-filters {
  display: flex;
  gap: 0.5rem;
}
#question-bank-filters .btn {
  flex: 1;
  padding: 0.35rem;
  font-size: 0.78rem;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--light-text);
}
#question-bank-filters .btn.active {
  background: var(--accent-color);
  color: var(--white);
  border-color: var(--accent-color);
}
#question-bank-list {
  flex: 1;
  overflow: auto;
  background: var(--light-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem;
}

.bank-question-text {
  /* Ensure it takes up available space */
  flex: 1; 
  /* Allow word wrapping */
  word-wrap: break-word;
  word-break: break-word;
}


/* bank items */
.bank-question-item {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 0.65rem;
  border-radius: 8px;
  margin-bottom: 0.45rem;
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  color: var(--primary-color);
}
.bank-question-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: #3e4f66;
}
.bank-question-item.added {
  opacity: 0.6;
  background: var(--light-bg);
  cursor: not-allowed;
}
.bank-question-item .badge {
  margin-left: 0.6rem;
  font-size: 0.72rem;
}
.badge-accent {
  background: var(--accent-color);
  color: var(--white);
  font-weight: 700;
  padding: 0.2rem 0.45rem;
  border-radius: 0.45rem;
}

/* main content wrapper */
.main-content-col-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  height: 100%;
}
.paper-controls {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 10px;
}
.paper-preview {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}
.preview-body {
  padding: 1.5rem;
  overflow: auto;
  flex: 1;
}
.preview-footer {
  padding: 0.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

/* PAPER HEADER (visible on screen) */
.paper-header {
  background: transparent;
  padding: 1rem 0 1.25rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
  text-align: center;
}
.paper-header h2 {
  margin: 0;
  font-size: 1.6rem;
  color: var(--primary-dark);
  font-weight: 800;
}
.paper-header h4 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--light-text);
  font-weight: 700;
  margin-top: 0.35rem;
}
.print-meta-bar {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  align-items: center;
  margin-top: 0.65rem;
  color: var(--light-text);
}
.print-meta-bar span {
  font-weight: 600;
  color: var(--primary-color);
}

/* FINAL PRINT HEADER (this is what we'll print at top) */
.final-print-header {
  text-align: center;
  margin-bottom: 12px;
}
.final-print-header h1 {
  margin: 0 0 6px 0;
  font-size: 20px;
  font-weight: 800;
}
.final-print-header .meta-row {
  margin: 6px 0;
  font-weight: 600;
}

/* paper item styles */
.preview-item {
  background: var(--light-bg);
  border: 1px solid var(--border-color);
  padding: 0.9rem;
  border-radius: 8px;
  margin-bottom: 0.9rem;
  position: relative;
  cursor: grab;
}
.preview-item:last-child {
  margin-bottom: 0;
}
.section-header-item {
  font-family: var(--header-font);
  font-weight: 700;
  color: var(--accent-color);
  border-bottom: 1px solid var(--accent-color);
  text-align: center;
  padding: 0.5rem;
  border-radius: 6px;
}
.question-item {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
}
.question-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}
.question-text {
  color: var(--primary-dark);
  font-weight: 600;
  white-space: pre-wrap;
  word-break: break-word;
  padding-right: 1rem;
  flex: 1;
}
.question-marks {
  color: var(--accent-color);
  font-weight: 700;
  white-space: nowrap;
}
.btn-remove-item {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  border: none;
  background: var(--panel-bg);
  color: var(--light-text);
  opacity: 0.6;
}
.preview-item:hover .btn-remove-item {
  opacity: 1;
  transform: scale(1.02);
}
.question-options {
  padding-left: 1.1rem;
  margin: 0;
}
.sortable-ghost {
  opacity: 0.85;
  border: 2px dashed var(--accent-color);
}

/* small helper */
.small.text-muted {
  color: var(--light-text);
}
#format-validation {
  font-size: 0.9rem;
  color: var(--danger-color);
}

/* question fly animation */
@keyframes flash-in {
  0% {
    background: var(--light-bg);
  }
  50% {
    background: var(--accent-glow);
  }
  100% {
    background: var(--light-bg);
  }
}
.flash-in {
  animation: flash-in 0.7s ease-out;
}
.question-fly-animation {
  position: fixed;
  z-index: 9999;
  border-radius: 8px;
  padding: 0.6rem;
  box-shadow: var(--shadow-md);
  background: var(--panel-bg);
  border: 1px solid var(--accent-color);
  color: var(--primary-color);
  transition: all 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* theme switch */
.theme-switch-wrapper {
  display: flex;
  align-items: center;
}
.theme-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}
.theme-switch input {
  display: none;
}
.slider {
  position: absolute;
  inset: 0;
  border-radius: 34px;
  background: var(--light-bg);
  border: 1px solid var(--border-color);
  cursor: pointer;
}
.slider:before {
  content: "";
  position: absolute;
  left: 3px;
  bottom: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--light-text);
  transition: 0.2s;
}
.slider .sun-icon {
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent-color);
  font-size: 0.8rem;
  opacity: 1;
  transition: 0.2s;
}
.slider .moon-icon {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent-color);
  font-size: 0.8rem;
  opacity: 0;
  transition: 0.2s;
}
.theme-switch input:checked + .slider {
  background: var(--white);
}
.theme-switch input:checked + .slider:before {
  transform: translateX(24px);
  background: var(--accent-color);
}
.theme-switch input:checked + .slider .sun-icon {
  opacity: 0;
}
.theme-switch input:checked + .slider .moon-icon {
  opacity: 1;
}

/* LIGHT MODE OVERRIDES */
body.light-mode {
  background: #f1f5f9;
  color: #0f172a;
}
body.light-mode .navbar {
  background: #fff;
  border-color: #e6eef8;
}
body.light-mode .subject-card,
body.light-mode .question-bank-col,
body.light-mode .paper-controls,
body.light-mode .paper-preview,
body.light-mode .main-format-card {
  background: #fff;
  border-color: #e2e8f0;
  color: #0f172a;
}
body.light-mode #brand-title {
  color: #0f172a;
}
body.light-mode .page-subtitle {
  color: #64748b;
}
body.light-mode .paper-header h2 {
  color: #0f172a;
}
body.light-mode .paper-header h4 {
  color: #334155;
}
body.light-mode .print-meta-bar span {
  color: #0f172a;
}
body.light-mode .main-format-card input.form-control,
body.light-mode .main-format-card select.form-select {
   background: #f8fafc;
   border-color: #e2e8f0;
   color: #0f172a;
}
body.light-mode .main-format-card select.form-select option {
  background: #f8fafc;
  color: #0f172a;
}
body.light-mode #question-bank-list {
   background: #f8fafc;
   border-color: #e2e8f0;
}
body.light-mode .bank-question-item,
body.light-mode .preview-item {
  background: #fff;
  border-color: #e2e8f0;
  color: #0f172a;
}
 body.light-mode .bank-question-item.added {
   background: #f1f5f9;
 }
 body.light-mode .bank-question-item:hover {
   background: #f8fafc;
 }
 body.light-mode .question-text {
   color: #0f172a;
 }
 body.light-mode .btn-secondary {
   background: #f1f5f9;
   border-color: #e2e8f0;
   color: #0f172a;
 }
 body.light-mode .btn-remove-item {
   background: #f1f5f9;
   color: #64748b;
 }

/* final preview draggable cursor */
#final-paper-questions-list .preview-item,
#final-paper-questions-list .section-header-item {
  cursor: grab;
}

/* responsive */
@media (max-width: 992px) {
  .content-wrapper-2-col {
    flex-direction: column;
    height: auto;
  }
  .wizard-steps-vertical {
    display: none;
  }
  .page-container {
    padding: 1rem;
  }
  .question-bank-col {
    width: 100%;
    height: auto;
    max-height: 400px;
  }
  .main-content-col-wrapper {
    height: auto;
  }
  .paper-preview {
    height: 600px;
  }
}

/* PRINT rules: print ONLY the final paper preview content (final header + questions) */
@media print {
  /* hide top UI and wizard and all controls */
  body > .navbar,
  body > .wizard-steps-vertical,
  .final-preview-controls,
  .paper-controls,
  #question-bank-list,
  #question-bank-filters,
  .theme-switch-wrapper,
  .btn,
  #page-1-chapter-selection,
  #page-2-format,
  #page-3-review {
    display: none !important;
  }

  /* show only the final page container */
  #page-4-final {
    display: block !important;
  }

  /* show only the final-paper-preview content */
  #final-paper-preview,
  #final-print-header,
  #final-paper-questions-list {
    display: block !important;
  }

  /* Hide any other on-screen header/meta */
  #print-header, .print-meta-bar { display: none !important; }

  /* Styling for printed header and questions */
  #final-print-header {
    text-align: center;
    margin-bottom: 12px;
    color: #000;
  }
  #final-print-header h1 { font-size: 20px; margin:0 0 6px 0; }
  #final-print-header .meta-row { font-size: 12px; margin:6px 0; }

  #final-paper-questions-list,
  #final-paper-questions-list .preview-item,
  #final-paper-questions-list .section-header-item {
    background: #fff !important;
    color: #000 !important;
    border: none !important;
    box-shadow: none !important;
    page-break-inside: avoid;
  }

  #final-paper-questions-list .preview-item {
    padding: 0 !important;
    margin: 0 0 12px 0 !important;
  }

  ol.question-options { margin-left: 20px; }

  @page { margin: 12mm 10mm; }
}