@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    --bg-dark: #090d16;
    --panel-dark: #111827;
    --border-dark: #1f2937;
    --accent-amber: #f59e0b;
    --accent-blue: #3b82f6;
    --accent-emerald: #10b981;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
}

.font-mono {
    font-family: 'JetBrains Mono', monospace;
}

/* Glassmorphism Panel */
.glass-panel {
    background: rgba(17, 24, 39, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-card-hover {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card-hover:hover {
    transform: translateY(-4px);
    border-color: rgba(245, 158, 11, 0.4);
    box-shadow: 0 12px 24px -10px rgba(245, 158, 11, 0.15);
}

/* Sidebar Navigation Styling */
.nav-sidebar-link {
    display: flex;
    items-center: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    border-radius: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.nav-sidebar-link:hover, .nav-sidebar-link.active {
    color: #ffffff;
    background-color: rgba(245, 158, 11, 0.12);
    border-left: 3px solid var(--accent-amber);
}

/* Callout Alerts */
.callout {
    padding: 1.25rem;
    border-radius: 0.75rem;
    border-left: 4px solid;
    margin: 1.5rem 0;
    font-size: 0.875rem;
}

.callout-info {
    background: rgba(59, 130, 246, 0.08);
    border-color: var(--accent-blue);
    color: #93c5fd;
}

.callout-warning {
    background: rgba(245, 158, 11, 0.08);
    border-color: var(--accent-amber);
    color: #fcd34d;
}

.callout-tip {
    background: rgba(16, 185, 129, 0.08);
    border-color: var(--accent-emerald);
    color: #6ee7b7;
}

/* Math TeX Formulas */
.mjx-chtml {
    color: #f59e0b !important;
}

/* Code Blocks */
pre code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #090d16;
}
::-webkit-scrollbar-thumb {
    background: #1f2937;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #f59e0b;
}