/* ========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ======================================== */
:root {
    --color-primary: #0066cc;
    --color-primary-hover: #0056b3;
    --color-primary-light: #007bff;

    --color-accent: #bb6;
    --color-accent-light: #bbc;
    --color-accent-bg: #fec;

    --color-text: #333;
    --color-text-secondary: #555;
    --color-text-muted: #669;
    --color-text-light: #446;
    --color-text-link: blue;
    --color-text-visted:purple;

    --color-bg: #fafafa;
    --color-bg-secondary: #f8f9fa;
    --color-bg-headlist: #fec;
    --color-bg-search: #e9ecef;

    --color-border: #333;
    --color-border-light: #666;

    --color-warning-bg: #fff3cd;
    --color-warning-border: #ffea97;
    --color-warning-text: #856404;

    --color-highlight: #ff9;

    --spacing-xs: 2px;
    --spacing-sm: 4px;
    --spacing-md: 8px;
    --spacing-lg: 10px;
    --spacing-xl: 15px;
    --spacing-xxl: 20px;

    --border-radius: 8px;
    --border-radius-sm: 3px;

    --font-family-serif: 'Times New Roman', Times, serif;
    --font-family-serif-alt: Georgia, 'Times New Roman', Times, serif;
    --font-family-mono: monospace;

    --line-height-tight: 1.1;
    --line-height-normal: 1.3;
    --line-height-relaxed: 1.5;

    --width-content: 85ch;
    --width-search: 120ch;
    --width-columns: 33ch;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ========================================
   CSS RESET & BASE STYLES
   ======================================== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family-serif);
    line-height: var(--line-height-relaxed);
    color: var(--color-text);
    background-color: var(--color-bg);
}

a:link {
    color: var(--color-text-link)
}
a:visited {
    color: var(--color-text-visited)
}

/* ========================================
   LAYOUT COMPONENTS
   ======================================== */
.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 1rem;
    background-color: var(--color-bg);
}

/* Search Controls */
.search-controls {
    margin: 0 auto;
    background: var(--color-bg-secondary);
    padding: var(--spacing-xs);
    z-index: 10;
    border-bottom: 3px solid var(--color-accent)
}

.search-section {
    max-width: var(--width-search);
    margin: 4px auto;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-accent-bg);
    border-radius: var(--border-radius);
    background-color: var(--color-bg-secondary);
}

.search-heading {
    display: inline-flex;
    margin-bottom: var(--spacing-md);
    max-width: var(--width-search);
    margin: auto;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1 {
    text-align: center;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

h2,
.search-section h3,
.search-section h4 {
    display: inline-flex;
    margin: var(--spacing-xs) 0;
    color: var(--color-text);
}

.headnote-header {
    color: var(--color-text);
    margin: var(--spacing-xs);
    font-size: 1.1em;
}

/* ========================================
   FORM CONTROLS
   ======================================== */
form {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.search-text-box,
.sql-text-box {
    width: min(var(--width-content), 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-xs) 0;
    font-family: var(--font-family-mono);
    font-size: clamp(10pt, 2.5vw, 12pt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-text-box {
    height: 1.4em;
}

.sql-text-box {
    height: 4.2em;
}

.search-text-box:focus,
.sql-text-box:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
}

.submit-button {
    padding: var(--spacing-sm) var(--spacing-xl);
    margin: 0 var(--spacing-sm);
    background: var(--color-primary);
    color: white;
    border: 1px solid var(--color-primary-hover);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.submit-button:hover {
    background: var(--color-primary-hover);
}

.submit-button:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.4);
}

.submit-button:active {
    transform: translateY(1px);
}

.search-clear-text {
    margin-left: var(--spacing-lg);
    color: var(--color-text-muted);
}

.sql-field-list {
    margin: 0;
    padding: var(--spacing-xs);
}

/* ========================================
   INTERACTIVE ELEMENTS
   ======================================== */
details {
    background-color: var(--color-bg-search);
    margin: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-normal);
}

details summary {
    padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) var(--spacing-lg);
    background-color: var(--color-accent-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    margin: 0;
    cursor: pointer;
    font-weight: bold;
    transition: background-color var(--transition-fast);
}

details summary:hover {
    background-color: var(--color-accent);
}

details summary:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.3);
}

.search-controls details[open] summary {
    background-color: var(--color-highlight) !important;
}

/* SQL Examples */
.sql-examples {
    padding: 0;
    margin: var(--spacing-xs) 0;
}

.example-queries {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin: var(--spacing-md) auto 0 auto;

}

.sql-example {
    background: var(--color-primary-light);
    color: white;
    border: 1pt solid var(--color-primary-hover);
    padding: 6px var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.sql-example:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
}

.sql-example:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.sql-example:active {
    transform: translateY(0);
}

/* ========================================
   CONTENT DISPLAY
   ======================================== */
/* Headnote Entries */
.headnote-entry {
    border: 1px solid var(--color-accent);
    padding: var(--spacing-lg);
    margin: var(--spacing-xs) 0 var(--spacing-md) 0;
    background-color: var(--color-bg);
    font-family: var(--font-family-serif);
    line-height: var(--line-height-normal);
    border-radius: var(--border-radius-sm);
    transition: box-shadow var(--transition-normal);
}

.headnote-entry:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.case-citation {
    font-style: italic;
    margin: 3px 0;
    color: var(--color-text-light);
    font-size: 1.05em;
}

.summary {
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
    font-size: 0.9em;
    line-height: var(--line-height-tight);
    text-align: justify;
    max-width: var(--width-content);
    font-family: var(--font-family-serif-alt);
}

.metadata {
    font-size: 0.9em;
    color: var(--color-text-secondary);
    margin: var(--spacing-xs) 0;
    padding: var(--spacing-xs);
}

.metadata-line {
    margin: 3px 0;
    padding: 0 var(--spacing-md);
}

.metadata-hide {
    margin: 0;
    color: var(--color-bg);
}

/* Tables */
table {
    border-spacing: 0;
    width: 100%;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

th {
    position: sticky;
    top: 0;
    border: 1px solid var(--color-border);
    background-color: var(--color-accent-bg);
    text-align: center;
    min-width: 140px;
    padding: var(--spacing-md);
}

td {
    border: 1px dotted var(--color-border-light);
    margin: 0;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.aggregate-results {
    border: 1px solid var(--color-accent);
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-md) 0;
}

/* ========================================
   HEADNOTE LIST & NAVIGATION
   ======================================== */
.headnote-list {
    background-color: var(--color-bg-headlist);
    color: var(--color-text);
    columns: var(--width-columns) 6;
    column-rule-width: 40ch;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
}

.head-number {
    font-weight: bold;
}

.level-1 {
    margin: var(--spacing-md) 0 var(--spacing-xs) var(--spacing-sm);
    font-size: 1em;
    font-weight: bold;
}

.level-2 {
    margin: var(--spacing-sm) 0 var(--spacing-xs) var(--spacing-md);
    font-size: 0.9em;
}

.level-3 {
    margin: 0 0 var(--spacing-xs) var(--spacing-xxl);
    font-size: 0.9em;
}

/* Links */
.citation-link {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast), text-decoration var(--transition-fast);
}

.citation-link:hover {
    text-decoration: underline;
    color: var(--color-primary-light);
}

.citation-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   UTILITY CLASSES & MESSAGES
   ======================================== */
.error-notice {
    background: var(--color-warning-bg);
    border: 1px solid var(--color-warning-border);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: 0.85em;
    color: var(--color-warning-text);
}

.results-info {
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-muted);
}

.no-results {
    text-align: center;
    color: var(--color-text-muted);
    font-style: italic;
    padding: var(--spacing-xxl);
}

.welcome {
    padding: var(--spacing-xxl);
    text-align: center;
    color: var(--color-text-muted);
}

.pagination {
    margin-top: 30px;
    text-align: center;
}

.pagination a {
    margin: 0 5px;
    color: var(--color-primary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.pagination a:hover {
    text-decoration: underline;
    background-color: var(--color-bg-secondary);
}

.pagination a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: 0 0.5rem;
    }

    .search-text-box,
    .sql-text-box {
        width: 100%;
        min-width: 0;
    }

    .search-section {
        max-width: 100%;
    }

    .search-heading {
        max-width: 100%;
    }

    .headnote-list {
        columns: 1;
    }

    .example-queries {
        gap: var(--spacing-sm);
    }

    .sql-example {
        font-size: 0.8em;
        padding: var(--spacing-sm) 6px;
    }

    .summary {
        max-width: 100%;
    }

    th {
        min-width: 80px;
        padding: var(--spacing-sm);
    }

    .headnote-entry {
        margin: var(--spacing-xs) 0;
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .level-2 {
        margin-left: var(--spacing-md);
    }

    .level-3 {
        margin-left: var(--spacing-lg);
    }

    .metadata-line {
        padding: 0 var(--spacing-sm);
    }

    .search-controls {
        position: relative;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .search-controls {
        display: none;
    }

    .headnote-entry {
        page-break-inside: avoid;
        border: 1px solid #000;
        margin-bottom: var(--spacing-lg);
    }

    .citation-link {
        color: #000 !important;
        text-decoration: underline;
    }

    .sql-examples,
    .error-notice {
        border: 1px solid #000;
    }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-primary: #55aaff;
        --color-primary-hover: #66bbff;
        --color-primary-light: #66bbff;

        --color-accent: #940;
        --color-accent-light: #445;
        --color-accent-bg: #558;


        --color-text: #e0e0e0;
        --color-text-secondary: #b0b0b0;
        --color-text-muted: #888;
        --color-text-light: #bbd;
        --color-text-link: #99e;
        --color-text-visited: #eae;

        --color-bg: #2a2a2a;
        --color-bg-secondary: #1f1f1f;
        --color-bg-headlist: #351509;
        --color-bg-search: #335;

        --color-border: #555;
        --color-border-light: #666;
        --color-highlight: #642;
    }



    body {
        background-color: var(--color-bg-secondary);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000;
        --color-text: #000;
        --color-bg: #fff;
    }
}