@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-dark: #090a0f;
  --bg-card: rgba(22, 25, 38, 0.7);
  --bg-card-hover: rgba(32, 37, 56, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --accent-primary: #7c3aed;
  --accent-secondary: #06b6d4;
  --accent-gold: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --glow-shadow: 0 0 25px rgba(124, 58, 237, 0.25);
}

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

body {
  background: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 40%);
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 3rem;
  background: rgba(15, 18, 28, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-icon {
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 8px rgba(245, 158, 11, 0.4));
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  background: rgba(124, 58, 237, 0.2);
  border: 1px solid rgba(124, 58, 237, 0.5);
  color: #c4b5fd;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-tabs {
  display: flex;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.3rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--accent-primary), #6d28d9);
  color: #fff;
  box-shadow: var(--glow-shadow);
}

/* Main Container */
.main-container {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 2rem;
}

/* Stats Hero Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.4);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(124, 58, 237, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #a78bfa;
}

.stat-info h4 {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: #fff;
}

.stat-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Tab Views */
.tab-view {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Search & Filter Bar */
.filter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
}

.filter-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 1rem;
  align-items: center;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.input-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.search-input, .select-input {
  background: rgba(10, 12, 20, 0.8);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
}

.search-input:focus, .select-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #6d28d9);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  height: 44px;
  align-self: flex-end;
  box-shadow: var(--glow-shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(124, 58, 237, 0.4);
}

/* Results Grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.resource-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.resource-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.resource-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: rgba(124, 58, 237, 0.3);
}

.resource-card:hover::before {
  opacity: 1;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.8rem;
}

.tag-class {
  background: rgba(6, 182, 212, 0.15);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.4);
  padding: 0.25rem 0.7rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag-source {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
}

.resource-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
}

.resource-subj {
  font-size: 0.85rem;
  color: var(--accent-gold);
  font-weight: 500;
}

.card-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: auto;
}

.btn-open, .btn-pdf {
  flex: 1;
  text-align: center;
  text-decoration: none;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-open {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-open:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-pdf {
  background: rgba(124, 58, 237, 0.2);
  color: #c4b5fd;
  border: 1px solid rgba(124, 58, 237, 0.4);
}

.btn-pdf:hover {
  background: var(--accent-primary);
  color: #fff;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: auto;
}

.btn-generate-card {
  width: 100%;
  background: linear-gradient(135deg, var(--accent-gold), #d97706);
  color: #fff;
  border: none;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.25);
}

.btn-generate-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
}

.topic-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-main);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
}

.topic-pill:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
  box-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

/* Question Paper Studio Studio */
.studio-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 2rem;
  align-items: start;
}

.studio-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.studio-sidebar h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: #fff;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.8rem;
}

.paper-preview-container {
  background: #10131d;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  min-height: 800px;
  position: relative;
}

.preview-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.toggle-switch {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
}

.btn-print {
  background: linear-gradient(135deg, var(--accent-secondary), #0284c7);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-print:hover {
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

/* Formal Exam Sheet Layout */
.exam-sheet {
  background: #ffffff;
  color: #111827;
  padding: 3rem;
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  font-family: 'Times New Roman', Times, serif;
}

.exam-header {
  text-align: center;
  border-bottom: 2px solid #111827;
  padding-bottom: 1.2rem;
  margin-bottom: 1.5rem;
}

.board-name {
  font-size: 1.3rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.4rem;
}

.exam-title {
  font-size: 1.1rem;
  font-weight: bold;
  margin-bottom: 0.8rem;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: bold;
  margin-top: 0.5rem;
}

.instructions-box {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.instructions-box h5 {
  font-weight: bold;
  margin-bottom: 0.4rem;
}

.instructions-box ul {
  padding-left: 1.5rem;
}

.section-block {
  margin-bottom: 2rem;
}

.section-header {
  background: #f1f5f9;
  padding: 0.6rem 1rem;
  font-weight: bold;
  font-size: 1.05rem;
  border-left: 4px solid #111827;
  margin-bottom: 1.2rem;
  display: flex;
  justify-content: space-between;
}

.question-item {
  margin-bottom: 1.2rem;
  line-height: 1.6;
}

.q-top {
  display: flex;
  justify-content: space-between;
  font-weight: bold;
}

.q-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 0.4rem;
  padding-left: 1.5rem;
}

.q-solution {
  display: none;
  background: #eff6ff;
  border: 1px dashed #3b82f6;
  color: #1e3a8a;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  margin-top: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.show-solutions .q-solution {
  display: block;
}

/* Related Resources Footer in Exam */
.exam-resources {
  margin-top: 3rem;
  border-top: 1px solid #cbd5e1;
  padding-top: 1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
}

/* Print Optimization */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
    padding: 0 !important;
    margin: 0 !important;
  }
  
  .navbar, .stats-bar, .studio-sidebar, .preview-toolbar {
    display: none !important;
  }
  
  .main-container, .studio-grid, .paper-preview-container {
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
  }
  
  .exam-sheet {
    box-shadow: none !important;
    padding: 0 !important;
    border: none !important;
    width: 100% !important;
  }
}