/* SiliconMind VLSI Learning Hub Custom Styles */
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', monospace;
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
}

body {
  font-family: var(--font-sans);
  overflow-x: hidden;
}

code, pre, .font-mono {
  font-family: var(--font-mono);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.6);
}

::-webkit-scrollbar-thumb {
  background: rgba(100, 116, 139, 0.4);
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.6);
}

/* Silicon Chip Pattern Background */
.bg-silicon-pattern {
  background-color: #0b1120;
  background-image: 
    radial-gradient(rgba(56, 189, 248, 0.08) 1px, transparent 0),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 24px 24px, 48px 48px, 48px 48px;
}

/* Glassmorphism Card */
.glass-panel {
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-panel-card {
  background: rgba(30, 41, 59, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.2s ease;
}

.glass-panel-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-2px);
}

/* Glow effects */
.glow-cyan {
  box-shadow: 0 0 25px -5px rgba(6, 182, 212, 0.3);
}

.glow-blue {
  box-shadow: 0 0 25px -5px rgba(59, 130, 246, 0.3);
}

/* Math KaTeX Styling */
.katex-display {
  margin: 1.25rem 0 !important;
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.6);
  border-radius: 0.5rem;
  border-left: 3px solid #06b6d4;
  overflow-x: auto;
}

/* Typography styles for lesson content */
.prose-silicon {
  color: #cbd5e1;
  line-height: 1.75;
}

.prose-silicon h1 {
  color: #f8fafc;
  font-weight: 800;
  font-size: 2rem;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

.prose-silicon h2 {
  color: #38bdf8;
  font-weight: 700;
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.5rem;
}

.prose-silicon h3 {
  color: #93c5fd;
  font-weight: 600;
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.prose-silicon p {
  margin-bottom: 1rem;
}

.prose-silicon ul {
  list-style-type: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.prose-silicon ol {
  list-style-type: decimal;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.prose-silicon li {
  margin-bottom: 0.4rem;
}

.prose-silicon blockquote {
  border-left: 4px solid #38bdf8;
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  background: rgba(56, 189, 248, 0.05);
  border-radius: 0 0.5rem 0.5rem 0;
  font-style: italic;
  color: #94a3b8;
}

.callout-info {
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
}

.callout-warning {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
}

.callout-tip {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
}

/* Markdown Tables */
.prose-silicon table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.5rem 0;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(51, 65, 85, 0.6);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.prose-silicon th {
  background: rgba(30, 41, 59, 0.9);
  color: #38bdf8;
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.8);
  font-size: 0.875rem;
  letter-spacing: 0.025em;
}

.prose-silicon td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
  color: #cbd5e1;
  font-size: 0.875rem;
}

.prose-silicon tr:last-child td {
  border-bottom: none;
}

.prose-silicon tr:hover td {
  background: rgba(56, 189, 248, 0.04);
}

/* Markdown Images */
.prose-silicon img {
  max-width: 100%;
  max-height: 480px;
  object-fit: contain;
  margin: 1.5rem auto;
  border-radius: 0.75rem;
  border: 1px solid rgba(56, 189, 248, 0.2);
  background: #020617;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 0 25px -5px rgba(6, 182, 212, 0.15);
  display: block;
}

/* Custom Range Slider */
input[type=range] {
  -webkit-appearance: none;
  background: #334155;
  height: 6px;
  border-radius: 9999px;
  outline: none;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #06b6d4;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
  transition: all 0.15s ease;
}

input[type=range]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: #38bdf8;
}

/* Selection Popover */
#selection-popup {
  transition: opacity 0.15s ease, transform 0.15s ease;
}

/* Shimmer / Pulse animation */
@keyframes pulse-subtle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.animate-pulse-subtle {
  animation: pulse-subtle 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Code Highlighting Block */
.code-block-wrapper {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: 0.5rem;
  overflow: hidden;
  margin: 1.25rem 0;
}

.code-header {
  background: #1e293b;
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: #94a3b8;
}

.code-content {
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.875rem;
  color: #e2e8f0;
}

/* Floating AI Chat Drawer Animation */
#ai-drawer {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}