/* =========================================================
   AIBE 2026 – NI Act 1881 – styles.css
   Island-Vibrant Color Theme
   ========================================================= */

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

:root {
  --ocean-deep:    #0b2545;
  --ocean-mid:     #1a4a7a;
  --ocean-light:   #2196f3;
  --ocean-pale:    #e3f2fd;

  --palm-dark:     #1b5e20;
  --palm-mid:      #2e7d32;
  --palm-light:    #4caf50;
  --palm-pale:     #e8f5e9;

  --sunset-deep:   #e65100;
  --sunset-mid:    #f57c00;
  --sunset-light:  #ff9800;
  --sunset-pale:   #fff3e0;

  --hibiscus-deep: #4a148c;
  --hibiscus-mid:  #7b1fa2;
  --hibiscus-light:#ce93d8;
  --hibiscus-pale: #f3e5f5;

  --coral-deep:    #b71c1c;
  --coral-mid:     #c62828;
  --coral-light:   #ef5350;
  --coral-pale:    #ffebee;

  --teal-deep:     #004d40;
  --teal-mid:      #00796b;
  --teal-light:    #26a69a;
  --teal-pale:     #e0f2f1;

  --sand:          #fff8e1;
  --white:         #ffffff;
  --text-dark:     #1a1a2e;
  --text-mid:      #37474f;
  --text-light:    #546e7a;
  --border-light:  rgba(0,0,0,0.08);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Source Serif 4', Georgia, serif;
  background: linear-gradient(135deg, #e0f7fa 0%, #e8f5e9 30%, #fff3e0 60%, #f3e5f5 100%);
  background-attachment: fixed;
  color: var(--text-dark);
  min-height: 100vh;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: relative;
  overflow: hidden;
  padding: 2.5rem 2rem 2rem;
  text-align: center;
}

.header-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg,
    #0b2545 0%, #1a4a7a 25%,
    #1b5e20 50%, #e65100 75%,
    #4a148c 100%);
  background-size: 400% 400%;
  animation: gradShift 12s ease infinite;
  z-index: 0;
}
.header-bg::after {
  content:'';
  position:absolute;inset:0;
  background: radial-gradient(circle at 20% 80%, rgba(255,152,0,0.25) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(33,150,243,0.2) 0%, transparent 50%),
              radial-gradient(circle at 50% 50%, rgba(206,147,216,0.15) 0%, transparent 60%);
}

@keyframes gradShift {
  0%  { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100%{ background-position: 0% 50%; }
}

.header-inner { position: relative; z-index: 1; }

.header-badge {
  display: inline-block;
  background: rgba(255,152,0,0.9);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding: 0.3rem 1.2rem;
  border-radius: 30px;
  margin-bottom: 1rem;
  box-shadow: 0 2px 12px rgba(255,152,0,0.4);
}

.header-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  margin-bottom: 0.5rem;
}

.year-tag {
  display: inline-block;
  background: rgba(255,152,0,0.85);
  color: #fff;
  font-size: 0.55em;
  padding: 0.15em 0.5em;
  border-radius: 6px;
  margin-left: 0.5rem;
  vertical-align: middle;
  font-weight: 700;
}

.header-sub {
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  font-style: italic;
  margin-bottom: 1.2rem;
  letter-spacing: 0.5px;
}

.header-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.chip {
  padding: 0.3rem 1rem;
  border-radius: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.chip-green  { background: rgba(76,175,80,0.85);  color: #fff; }
.chip-saffron{ background: rgba(255,152,0,0.85);  color: #fff; }
.chip-blue   { background: rgba(33,150,243,0.85); color: #fff; }
.chip-violet { background: rgba(206,147,216,0.85);color: #fff; }

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, #ff9800, #e65100);
  color: #fff;
  border: none;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-md);
  font-family: 'Source Serif 4', serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 3px 12px rgba(230,81,0,0.35);
  transition: all 0.2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 5px 18px rgba(230,81,0,0.5); }

.btn-secondary {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-md);
  font-family: 'Source Serif 4', serif;
  font-size: 0.85rem;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: all 0.2s;
}
.btn-secondary:hover { background: rgba(255,255,255,0.25); transform: translateY(-1px); }

/* =========================================================
   LAYOUT
   ========================================================= */
.layout-wrapper {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  max-width: 1600px;
  margin: 0 auto;
  min-height: calc(100vh - 200px);
}

/* =========================================================
   SIDEBAR
   ========================================================= */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: linear-gradient(180deg, #0b2545 0%, #1a4a7a 60%, #004d40 100%);
  box-shadow: 3px 0 20px rgba(0,0,0,0.2);
  z-index: 10;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,152,0,0.5) transparent;
}

.sidebar-inner { padding: 1.2rem 0.8rem; }

.sidebar-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255,152,0,0.9);
  padding: 0.5rem 0.8rem 1rem;
  font-weight: 700;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.snav-btn {
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.8);
  text-align: left;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  font-family: 'Source Serif 4', serif;
  font-size: 0.84rem;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.4;
}
.snav-btn:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
  transform: translateX(4px);
}
.snav-btn.active {
  background: linear-gradient(135deg, rgba(255,152,0,0.85), rgba(230,81,0,0.7));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(255,152,0,0.3);
}
.snav-accent {
  color: rgba(206,147,216,0.9) !important;
  font-size: 0.8rem;
}
.snav-accent:hover { color: #fff !important; }
.snav-sep {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.12);
  margin: 0.6rem 0;
}

/* =========================================================
   MAIN CONTENT
   ========================================================= */
.main-content {
  padding: 2rem;
  overflow-x: hidden;
}

/* =========================================================
   TAB PANELS
   ========================================================= */
.tab-panels { margin-bottom: 2.5rem; }

.tab-panel { display: none; animation: fadeIn 0.35s ease; }
.tab-panel.active { display: block; }

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

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.2rem 1.6rem;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  color: #fff;
}
.panel-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 700;
}
.panel-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  background: rgba(255,255,255,0.2);
  padding: 0.25rem 0.8rem;
  border-radius: 20px;
  white-space: nowrap;
}

.panel-teal    { background: linear-gradient(135deg, #004d40, #00796b); }
.panel-blue    { background: linear-gradient(135deg, #0b2545, #1a4a7a); }
.panel-green   { background: linear-gradient(135deg, #1b5e20, #2e7d32); }
.panel-saffron { background: linear-gradient(135deg, #e65100, #f57c00); }
.panel-violet  { background: linear-gradient(135deg, #4a148c, #7b1fa2); }
.panel-red     { background: linear-gradient(135deg, #b71c1c, #c62828); }

.panel-body {
  background: var(--white);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  border-top: none;
}

/* =========================================================
   INFO CARDS GRID
   ========================================================= */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
  margin: 1.2rem 0;
}

.info-card {
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius-md);
  border-left: 4px solid;
}
.info-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  margin-bottom: 0.6rem;
}
.info-card p { font-size: 0.9rem; line-height: 1.65; color: var(--text-mid); }

.card-blue   { background: var(--ocean-pale);   border-color: var(--ocean-light);   }
.card-blue h3{ color: var(--ocean-mid); }
.card-green  { background: var(--palm-pale);    border-color: var(--palm-light);    }
.card-green h3{ color: var(--palm-mid); }
.card-saffron{ background: var(--sunset-pale);  border-color: var(--sunset-light);  }
.card-saffron h3{ color: var(--sunset-deep); }
.card-violet { background: var(--hibiscus-pale);border-color: var(--hibiscus-light);}
.card-violet h3{ color: var(--hibiscus-mid); }
.card-red    { background: var(--coral-pale);   border-color: var(--coral-light);   }
.card-red h3 { color: var(--coral-mid); }

/* =========================================================
   EXAMPLE BOX
   ========================================================= */
.example-box {
  background: linear-gradient(135deg, #fff8e1, #e8f5e9);
  border: 1.5px solid rgba(255,152,0,0.4);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem;
  margin: 1.2rem 0;
  position: relative;
}
.example-box.example-red {
  background: linear-gradient(135deg, #ffebee, #fff3e0);
  border-color: rgba(239,83,80,0.4);
}
.example-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--sunset-deep);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}
.example-box p, .example-box ul { font-size: 0.9rem; line-height: 1.7; color: var(--text-mid); }
.example-box ul { padding-left: 1.2rem; }
.example-box li { margin-bottom: 0.3rem; }

/* =========================================================
   KEY POINT BOX
   ========================================================= */
.key-point-box {
  background: linear-gradient(135deg, #e3f2fd, #e0f2f1);
  border: 1.5px solid rgba(33,150,243,0.3);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem;
  margin: 1.2rem 0;
}
.key-point-box h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  color: var(--ocean-mid);
  margin-bottom: 0.7rem;
}
.key-point-box ul { padding-left: 1.2rem; }
.key-point-box li { font-size: 0.9rem; line-height: 1.7; color: var(--text-mid); margin-bottom: 0.3rem; }
.key-point-box p  { font-size: 0.9rem; line-height: 1.7; color: var(--text-mid); }

/* =========================================================
   FEATURE LIST
   ========================================================= */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-mid);
}
.feature-list li:last-child { border-bottom: none; }

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 22px;
  padding: 0 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
  color: #fff;
}
.badge-green   { background: var(--palm-mid); }
.badge-saffron { background: var(--sunset-mid); }
.badge-blue    { background: var(--ocean-mid); }
.badge-violet  { background: var(--hibiscus-mid); }
.badge-red     { background: var(--coral-mid); }

.sub-heading {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  color: var(--text-dark);
  margin: 1.5rem 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border-light);
}

/* =========================================================
   TABLES
   ========================================================= */
.table-wrapper { overflow-x: auto; margin: 1.2rem 0; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }

.styled-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }

.styled-table thead tr {
  background: linear-gradient(135deg, #0b2545, #1a4a7a);
  color: #fff;
}
.styled-table th {
  padding: 0.8rem 1rem;
  text-align: left;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
}
.styled-table td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  color: var(--text-mid);
  line-height: 1.55;
  vertical-align: top;
}
.styled-table tbody tr:nth-child(even)  { background: rgba(33,150,243,0.04); }
.styled-table tbody tr:hover { background: rgba(255,152,0,0.07); }

.ans-table td.ans-correct {
  color: var(--palm-dark);
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

/* =========================================================
   HIGHLIGHT BANNER
   ========================================================= */
.highlight-banner {
  background: linear-gradient(135deg, rgba(255,152,0,0.15), rgba(239,83,80,0.1));
  border: 2px solid rgba(255,152,0,0.5);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.3rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--sunset-deep);
  margin-bottom: 1.5rem;
  text-align: center;
}

/* =========================================================
   FLOWCHART
   ========================================================= */
.flowchart-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 1rem 0;
}

.fc-node {
  background: linear-gradient(135deg, #0b2545, #1a4a7a);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 0.85rem 1.8rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.95rem;
  min-width: 220px;
  box-shadow: var(--shadow-md);
  line-height: 1.4;
}
.fc-node small { font-size: 0.75em; opacity: 0.85; }

.fc-top { background: linear-gradient(135deg, #4a148c, #7b1fa2); font-size: 1.05rem; font-family: 'Playfair Display',serif; }
.fc-mid { background: linear-gradient(135deg, #b71c1c, #c62828); }
.fc-blue  { background: linear-gradient(135deg, #0b2545, #1565c0); }
.fc-blue2 { background: linear-gradient(135deg, #1565c0, #42a5f5); font-size: 0.85rem; }
.fc-blue3 { background: linear-gradient(135deg, #42a5f5, #80deea); color: #0b2545; font-size: 0.85rem; }
.fc-green  { background: linear-gradient(135deg, #1b5e20, #2e7d32); }
.fc-green2 { background: linear-gradient(135deg, #2e7d32, #66bb6a); font-size: 0.85rem; }
.fc-green3 { background: linear-gradient(135deg, #66bb6a, #a5d6a7); color: #1b5e20; font-size: 0.85rem; }
.fc-saffron  { background: linear-gradient(135deg, #e65100, #f57c00); }
.fc-saffron2 { background: linear-gradient(135deg, #f57c00, #ffb74d); font-size: 0.85rem; }
.fc-saffron3 { background: linear-gradient(135deg, #ffb74d, #ffe082); color: #e65100; font-size: 0.85rem; }
.fc-violet { background: linear-gradient(135deg, #4a148c, #7b1fa2); }
.fc-red    { background: linear-gradient(135deg, #b71c1c, #ef5350); }

.fc-arrow {
  font-size: 1.3rem;
  color: var(--hibiscus-mid);
  padding: 0.15rem 0;
  line-height: 1;
}
.fc-wide { display: block; }

.fc-row3, .fc-row2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  width: 100%;
  max-width: 960px;
  align-items: start;
}
.fc-row2 { grid-template-columns: repeat(2, 1fr); max-width: 600px; }

.fc-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.fc-branch .fc-arrow { color: var(--palm-mid); }

.fc-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  justify-content: center;
  max-width: 960px;
  margin-top: 0.5rem;
}
.fc-step {
  background: linear-gradient(135deg, #e8f5e9, #e3f2fd);
  border: 1.5px solid rgba(76,175,80,0.4);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.9rem;
  font-size: 0.82rem;
  text-align: center;
  color: var(--text-dark);
  min-width: 130px;
}
.fc-step-arrow { color: var(--sunset-mid); font-size: 1.2rem; font-weight: 700; }

/* =========================================================
   MIND MAP
   ========================================================= */
.mindmap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0;
}

.mm-center {
  background: linear-gradient(135deg, #4a148c, #7b1fa2);
  color: #fff;
  border-radius: 50%;
  width: 110px;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(74,20,140,0.4);
  line-height: 1.3;
}

.mm-branches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
  width: 100%;
}

.mm-branch { display: flex; flex-direction: column; gap: 0.4rem; align-items: flex-start; }

.mm-node {
  color: #fff;
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  font-weight: 700;
  font-size: 0.9rem;
  width: 100%;
  font-family: 'Playfair Display', serif;
  box-shadow: var(--shadow-sm);
}
.mm-blue    { background: linear-gradient(135deg, #0b2545, #1a4a7a); }
.mm-green   { background: linear-gradient(135deg, #1b5e20, #2e7d32); }
.mm-saffron { background: linear-gradient(135deg, #e65100, #f57c00); }
.mm-violet  { background: linear-gradient(135deg, #4a148c, #7b1fa2); }
.mm-red     { background: linear-gradient(135deg, #b71c1c, #c62828); }
.mm-teal    { background: linear-gradient(135deg, #004d40, #00796b); }

.mm-children { display: flex; flex-direction: column; gap: 3px; width: 100%; padding-left: 0.8rem; }
.mm-child {
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  font-size: 0.82rem;
  color: var(--text-mid);
  line-height: 1.4;
}

/* =========================================================
   ROADMAP
   ========================================================= */
.roadmap { display: flex; flex-direction: column; align-items: center; gap: 0; }

.rm-step {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  width: 100%;
  max-width: 780px;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid var(--border-light);
}

.rm-step1 { border-left: 4px solid var(--ocean-light); }
.rm-step2 { border-left: 4px solid var(--palm-light); }
.rm-step3 { border-left: 4px solid var(--sunset-light); }
.rm-step4 { border-left: 4px solid var(--hibiscus-light); }
.rm-step5 { border-left: 4px solid var(--coral-light); }
.rm-step6 { border-left: 4px solid var(--teal-light); }

.rm-number {
  min-width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.rm-step1 .rm-number { background: var(--ocean-mid); }
.rm-step2 .rm-number { background: var(--palm-mid); }
.rm-step3 .rm-number { background: var(--sunset-mid); }
.rm-step4 .rm-number { background: var(--hibiscus-mid); }
.rm-step5 .rm-number { background: var(--coral-mid); }
.rm-step6 .rm-number { background: var(--teal-mid); }

.rm-content h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  color: var(--text-dark);
  margin-bottom: 0.4rem;
}
.rm-content p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.65; margin-bottom: 0.5rem; }
.rm-focus {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--sunset-deep);
  background: var(--sunset-pale);
  border-radius: 6px;
  padding: 0.25rem 0.7rem;
  display: inline-block;
}

.rm-connector {
  font-size: 1.5rem;
  color: var(--hibiscus-mid);
  padding: 0.2rem 0;
}

/* =========================================================
   QA SECTIONS
   ========================================================= */
.qa-section {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
  overflow: hidden;
}

.qa-header {
  background: linear-gradient(135deg, #1b5e20, #2e7d32);
  color: #fff;
  padding: 1.2rem 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.qa-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
}
.qa-sub { font-style: italic; opacity: 0.85; font-size: 0.9rem; margin-top: 0.2rem; }

/* MCQ */
.mcq-list { padding: 1.5rem; display: flex; flex-direction: column; gap: 1.2rem; }

.mcq-item {
  background: linear-gradient(135deg, #f8fbff, #f1fff4);
  border: 1.5px solid rgba(33,150,243,0.15);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem;
  transition: box-shadow 0.2s;
}
.mcq-item:hover { box-shadow: 0 3px 14px rgba(33,150,243,0.15); }

.mcq-q {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.8rem;
  font-size: 0.93rem;
  line-height: 1.55;
}
.mcq-num {
  font-family: 'JetBrains Mono', monospace;
  color: var(--ocean-mid);
  font-size: 0.85rem;
  margin-right: 0.3rem;
}

.mcq-opts { display: flex; flex-direction: column; gap: 0.4rem; }
.mcq-opts label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-mid);
  cursor: pointer;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  transition: background 0.15s;
}
.mcq-opts label:hover { background: rgba(33,150,243,0.07); }
.mcq-opts input[type=radio] { margin-top: 3px; flex-shrink: 0; accent-color: var(--ocean-mid); }

.diff-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 12px;
  margin-left: 0.5rem;
  vertical-align: middle;
}
.badge-easy { background: rgba(76,175,80,0.15); color: var(--palm-dark); }
.badge-mod  { background: rgba(255,152,0,0.15); color: var(--sunset-deep); }
.badge-hard { background: rgba(239,83,80,0.15); color: var(--coral-mid); }

/* Short / Descriptive */
.short-list { padding: 1.5rem; display: flex; flex-direction: column; gap: 0.8rem; }

.short-item {
  display: flex;
  gap: 0.8rem;
  background: rgba(33,150,243,0.04);
  border: 1px solid rgba(33,150,243,0.12);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
  color: var(--text-mid);
  line-height: 1.6;
}
.desc-item { background: rgba(255,152,0,0.04); border-color: rgba(255,152,0,0.15); }
.sq-num {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--ocean-mid);
  flex-shrink: 0;
  font-size: 0.85rem;
  margin-top: 1px;
}

/* Answer Key */
.btn-toggle-ans {
  background: rgba(255,255,255,0.2);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-toggle-ans:hover { background: rgba(255,255,255,0.35); }

/* Quick Revision Cards */
.revision-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  padding: 1.5rem;
}

.rev-card {
  border-radius: var(--radius-md);
  padding: 1.1rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.rev-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.rev-text { font-size: 0.82rem; line-height: 1.55; }

.rev-blue   { background: linear-gradient(135deg, #e3f2fd, #bbdefb); }
.rev-blue .rev-num { color: var(--ocean-mid); }
.rev-blue .rev-text { color: var(--ocean-deep); }

.rev-green  { background: linear-gradient(135deg, #e8f5e9, #c8e6c9); }
.rev-green .rev-num { color: var(--palm-dark); }
.rev-green .rev-text { color: var(--palm-dark); }

.rev-saffron{ background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.rev-saffron .rev-num { color: var(--sunset-deep); }
.rev-saffron .rev-text { color: #4a2000; }

.rev-violet { background: linear-gradient(135deg, #f3e5f5, #e1bee7); }
.rev-violet .rev-num { color: var(--hibiscus-mid); }
.rev-violet .rev-text { color: #2d004f; }

.rev-red    { background: linear-gradient(135deg, #ffebee, #ffcdd2); }
.rev-red .rev-num { color: var(--coral-mid); }
.rev-red .rev-text { color: #5c0000; }

.rev-teal   { background: linear-gradient(135deg, #e0f2f1, #b2dfdb); }
.rev-teal .rev-num { color: var(--teal-deep); }
.rev-teal .rev-text { color: var(--teal-deep); }

/* Disclaimer */
.disclaimer {
  background: rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: var(--radius-md);
  padding: 1rem 1.3rem;
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-top: 2rem;
}

/* =========================================================
   PRINT STYLES
   ========================================================= */
@media print {
  body { background: #fff; font-size: 12px; }
  .sidebar, .header-actions, .btn-toggle-ans, .btn-primary, .btn-secondary { display: none !important; }
  .layout-wrapper { grid-template-columns: 1fr; }
  .main-content { padding: 0; }
  .tab-panel { display: block !important; page-break-before: always; }
  .tab-panel:first-child { page-break-before: auto; }
  .header-bg { background: #0b2545 !important; animation: none; }
  .site-header { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .panel-header { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .layout-wrapper { grid-template-columns: 1fr; }
  .sidebar {
    position: relative;
    height: auto;
    max-height: 260px;
    overflow-y: auto;
  }
  .sidebar-nav { flex-direction: row; flex-wrap: wrap; }
  .snav-btn { font-size: 0.78rem; padding: 0.4rem 0.7rem; }
  .fc-row3 { grid-template-columns: 1fr; }
  .fc-row2 { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .main-content { padding: 1rem; }
  .revision-cards { grid-template-columns: repeat(2, 1fr); }
  .header-title { font-size: 1.5rem; }
  .rm-step { flex-direction: column; gap: 0.7rem; }
}