/* PolicyEngine Quarto Book Custom Styling
 * Based on PolicyEngine App V2 Design System
 * Primary: Teal (#319795), Font: Inter
 */

/* Import Inter and JetBrains Mono fonts from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
    /* Primary Teal Color Scale */
    --pe-primary-50: #E6FFFA;
    --pe-primary-100: #B2F5EA;
    --pe-primary-200: #81E6D9;
    --pe-primary-300: #4FD1C5;
    --pe-primary-400: #38B2AC;
    --pe-primary-500: #319795;  /* Main teal */
    --pe-primary-600: #2C7A7B;
    --pe-primary-700: #285E61;
    --pe-primary-800: #234E52;
    --pe-primary-900: #1D4044;

    /* Gray Scale */
    --pe-gray-50: #F9FAFB;
    --pe-gray-100: #F2F4F7;
    --pe-gray-200: #E2E8F0;
    --pe-gray-300: #D1D5DB;
    --pe-gray-400: #9CA3AF;
    --pe-gray-500: #6B7280;
    --pe-gray-600: #4B5563;
    --pe-gray-700: #344054;
    --pe-gray-800: #1F2937;
    --pe-gray-900: #101828;

    /* Semantic Colors */
    --pe-success: #22C55E;
    --pe-warning: #FEC601;
    --pe-error: #EF4444;
    --pe-info: #1890FF;

    /* Typography */
    --pe-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --pe-font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Spacing */
    --pe-space-xs: 4px;
    --pe-space-sm: 8px;
    --pe-space-md: 12px;
    --pe-space-lg: 16px;
    --pe-space-xl: 20px;
    --pe-space-2xl: 24px;
    --pe-space-3xl: 32px;

    /* Border Radius */
    --pe-radius-sm: 4px;
    --pe-radius-md: 6px;
    --pe-radius-lg: 8px;
    --pe-radius-xl: 12px;

    /* Shadows */
    --pe-shadow-xs: 0px 1px 2px 0px rgba(16, 24, 40, 0.05);
    --pe-shadow-sm: 0px 1px 3px 0px rgba(16, 24, 40, 0.1);
    --pe-shadow-md: 0px 4px 6px -1px rgba(16, 24, 40, 0.1);
    --pe-shadow-lg: 0px 10px 15px -3px rgba(16, 24, 40, 0.1);
}

/* ========================================
   Global Typography
   ======================================== */
body, html {
    font-family: var(--pe-font-family);
    color: var(--pe-gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--pe-font-family);
    font-weight: 600;
    line-height: 1.3;
    margin-top: var(--pe-space-3xl);
    margin-bottom: var(--pe-space-lg);
    color: var(--pe-gray-900);
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    border-bottom: 2px solid var(--pe-primary-500);
    padding-bottom: var(--pe-space-md);
}

h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid var(--pe-gray-200);
    padding-bottom: var(--pe-space-sm);
}

h3 {
    font-size: 1.25rem;
    color: var(--pe-primary-700);
}

h4 {
    font-size: 1.125rem;
}

/* Paragraphs */
p {
    margin-bottom: var(--pe-space-lg);
    color: var(--pe-gray-700);
}

/* ========================================
   Links
   ======================================== */
a {
    color: var(--pe-primary-500);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--pe-primary-700);
    text-decoration: underline;
}

/* Navigation links */
nav a {
    font-weight: 500;
}

/* ========================================
   Buttons
   ======================================== */
.btn, button, .button,
input[type="submit"], input[type="button"] {
    font-family: var(--pe-font-family);
    background-color: var(--pe-primary-500);
    color: white;
    border: none;
    padding: var(--pe-space-sm) var(--pe-space-lg);
    border-radius: var(--pe-radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    margin: var(--pe-space-sm) 0;
    display: inline-block;
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: var(--pe-shadow-xs);
}

.btn:hover, button:hover, .button:hover,
input[type="submit"]:hover, input[type="button"]:hover {
    background-color: var(--pe-primary-600);
    color: white;
    text-decoration: none;
    box-shadow: var(--pe-shadow-sm);
    transform: translateY(-1px);
}

.btn:active, button:active, .button:active {
    background-color: var(--pe-primary-700);
    transform: translateY(0);
}

/* ========================================
   Code Blocks
   ======================================== */
pre {
    font-family: var(--pe-font-mono);
    background-color: var(--pe-gray-50);
    border: 1px solid var(--pe-gray-200);
    border-radius: var(--pe-radius-lg);
    padding: var(--pe-space-lg);
    overflow: auto;
    font-size: 14px;
    line-height: 1.5;
}

code {
    font-family: var(--pe-font-mono);
    background-color: var(--pe-primary-50);
    color: var(--pe-primary-700);
    padding: 2px 6px;
    border-radius: var(--pe-radius-sm);
    font-size: 0.875em;
}

pre code {
    background-color: transparent;
    color: inherit;
    padding: 0;
}

/* ========================================
   Tables
   ======================================== */
table {
    border-collapse: collapse;
    width: 100%;
    margin: var(--pe-space-2xl) 0;
    font-size: 14px;
    box-shadow: var(--pe-shadow-xs);
    border-radius: var(--pe-radius-lg);
    overflow: hidden;
}

th {
    background-color: var(--pe-primary-500);
    color: white;
    padding: var(--pe-space-md) var(--pe-space-lg);
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: var(--pe-space-md) var(--pe-space-lg);
    border-bottom: 1px solid var(--pe-gray-200);
    color: var(--pe-gray-700);
}

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

tbody tr:hover {
    background-color: var(--pe-primary-50) !important;
}

tbody tr:hover td {
    color: var(--pe-gray-900) !important;
    background-color: var(--pe-primary-50) !important;
}

/* Alternating row colors */
tbody tr:nth-child(even) {
    background-color: var(--pe-gray-50);
}

/* ========================================
   Blockquotes
   ======================================== */
blockquote {
    border-left: 4px solid var(--pe-primary-500);
    padding: var(--pe-space-md) var(--pe-space-xl);
    margin: var(--pe-space-2xl) 0;
    background-color: var(--pe-gray-50);
    border-radius: 0 var(--pe-radius-md) var(--pe-radius-md) 0;
    color: var(--pe-gray-600);
    font-style: italic;
}

blockquote p {
    margin-bottom: 0;
}

/* ========================================
   Admonitions / Callout Boxes
   ======================================== */
.admonition {
    padding: var(--pe-space-lg);
    margin: var(--pe-space-2xl) 0;
    border-left: 4px solid var(--pe-primary-500);
    background-color: var(--pe-primary-50);
    border-radius: 0 var(--pe-radius-lg) var(--pe-radius-lg) 0;
    box-shadow: var(--pe-shadow-xs);
}

.admonition-title {
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--pe-primary-700);
    margin-bottom: var(--pe-space-sm);
}

/* Note admonition */
.admonition.note {
    border-left-color: var(--pe-info);
    background-color: #EFF6FF;
}
.admonition.note .admonition-title {
    color: var(--pe-info);
}

/* Warning admonition */
.admonition.warning {
    border-left-color: var(--pe-warning);
    background-color: #FFFBEB;
}
.admonition.warning .admonition-title {
    color: #B45309;
}

/* Danger/Error admonition */
.admonition.danger, .admonition.error {
    border-left-color: var(--pe-error);
    background-color: #FEF2F2;
}
.admonition.danger .admonition-title,
.admonition.error .admonition-title {
    color: var(--pe-error);
}

/* Tip/Success admonition */
.admonition.tip, .admonition.success {
    border-left-color: var(--pe-success);
    background-color: #F0FDF4;
}
.admonition.tip .admonition-title,
.admonition.success .admonition-title {
    color: var(--pe-success);
}

/* ========================================
   Citations & References
   ======================================== */
.citation, .reference {
    color: var(--pe-primary-600);
    font-weight: 500;
}

.citation:hover, .reference:hover {
    color: var(--pe-primary-700);
}

/* Bibliography entries */
.bibliography dt {
    font-weight: 600;
    color: var(--pe-primary-700);
}

.bibliography dd {
    margin-bottom: var(--pe-space-lg);
    padding-left: var(--pe-space-xl);
    color: var(--pe-gray-600);
}

/* ========================================
   Lists
   ======================================== */
ul, ol {
    margin-bottom: var(--pe-space-lg);
    padding-left: var(--pe-space-2xl);
}

li {
    margin-bottom: var(--pe-space-sm);
    color: var(--pe-gray-700);
}

li::marker {
    color: var(--pe-primary-500);
}

/* ========================================
   Sidebar / Navigation Enhancements
   ======================================== */
.sidebar, nav.toc {
    font-family: var(--pe-font-family);
}

nav.toc a {
    color: var(--pe-gray-600);
    padding: var(--pe-space-sm) var(--pe-space-md);
    border-radius: var(--pe-radius-sm);
    display: block;
    transition: all 0.2s ease;
}

nav.toc a:hover {
    background-color: var(--pe-primary-50);
    color: var(--pe-primary-600);
    text-decoration: none;
}

nav.toc a.active {
    background-color: var(--pe-primary-100);
    color: var(--pe-primary-700);
    font-weight: 600;
}

/* ========================================
   Mermaid Diagram Styling
   ======================================== */
.mermaid {
    background-color: var(--pe-gray-50);
    padding: var(--pe-space-lg);
    border-radius: var(--pe-radius-lg);
    margin: var(--pe-space-2xl) 0;
}

/* ========================================
   Footer
   ======================================== */
footer {
    border-top: 1px solid var(--pe-gray-200);
    padding-top: var(--pe-space-2xl);
    margin-top: var(--pe-space-3xl);
    color: var(--pe-gray-500);
    font-size: 14px;
}

/* ========================================
   Utility Classes
   ======================================== */
.text-primary {
    color: var(--pe-primary-500);
}

.bg-primary {
    background-color: var(--pe-primary-500);
}

.text-muted {
    color: var(--pe-gray-500);
}

/* Draft Notice Banner */
.draft-notice {
    background: linear-gradient(135deg, var(--pe-primary-500), var(--pe-primary-600));
    color: white;
    padding: var(--pe-space-md) var(--pe-space-lg);
    border-radius: var(--pe-radius-md);
    margin-bottom: var(--pe-space-2xl);
    font-weight: 500;
    text-align: center;
}