/* CSS Variables for Light Theme */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #f0f0f0;
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --border-color: #d0d7de;
    --link-color: #0969da;
    --link-hover: #0550ae;
    --header-bg: #0969da;
    --header-text: #ffffff;
    --button-bg: #0969da;
    --button-hover: #0550ae;
    --button-text: #ffffff;
    --input-border: #d0d7de;
    --input-focus: #0969da;
    --shadow: rgba(0, 0, 0, 0.1);
}

/* Dark Theme */
body.dark-theme {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --link-color: #58a6ff;
    --link-hover: #79c0ff;
    --header-bg: #1f6feb;
    --header-text: #ffffff;
    --button-bg: #1f6feb;
    --button-hover: #388bfd;
    --button-text: #ffffff;
    --input-border: #30363d;
    --input-focus: #58a6ff;
    --shadow: rgba(0, 0, 0, 0.3);
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background-color: var(--header-bg);
    color: var(--header-text);
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    gap: 1rem;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1rem;
    opacity: 0.9;
}

header .subtitle {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

header a {
    color: var(--header-text);
    text-decoration: underline;
}

header a:hover {
    opacity: 0.8;
}

/* Theme Toggle Button */
.theme-toggle {
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    padding: 0.25rem;
    cursor: pointer;
    color: var(--header-text);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.6rem;
    border-radius: 5px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
    opacity: 0.6;
}

.theme-option svg {
    flex-shrink: 0;
}

.theme-option span {
    line-height: 1;
}

.theme-divider {
    width: 1px;
    height: 1.5rem;
    background: rgba(255, 255, 255, 0.2);
}

/* Active state styling */
body:not(.dark-theme) .theme-option[data-theme="light"],
body.dark-theme .theme-option[data-theme="dark"] {
    background: rgba(255, 255, 255, 0.3);
    opacity: 1;
    font-weight: 600;
}

/* Main Content */
main {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Controls Container */
.controls-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.search-section {
    margin-bottom: 1rem;
}

.search-section label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

#search-box {
    width: 100%;
    padding: 0.5rem;
    font-size: 1rem;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

#search-box:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

/* Filters Section */
.filters-section {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
    margin-top: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    min-width: 150px;
}

.filter-group label {
    margin-bottom: 0.25rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.filter-group select {
    padding: 0.5rem;
    font-size: 0.95rem;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--input-focus);
}

.filter-group select option:disabled {
    color: var(--text-secondary);
    opacity: 0.6;
}

.reset-btn {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s;
}

.reset-btn:hover {
    background-color: var(--button-hover);
}

.reset-btn:active {
    transform: translateY(1px);
}

/* Tags Filter */
.tags-filter-container {
    margin-top: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    background-color: var(--bg-primary);
}

.tags-filter-container summary {
    cursor: pointer;
    font-weight: 600;
    padding: 0.5rem;
    user-select: none;
}

.tags-filter-container summary:hover {
    background-color: var(--bg-secondary);
    border-radius: 4px;
}

.tag-sort-toggle {
    padding: 0.5rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    background-color: var(--bg-secondary);
    border-radius: 4px;
    border-bottom: 1px solid var(--border-color);
}

.tag-sort-toggle label:first-child {
    font-weight: 600;
    font-size: 0.9rem;
}

.tag-logic-toggle {
    padding: 0.5rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    background-color: var(--bg-secondary);
    border-radius: 4px;
}

.tag-logic-toggle label:first-child {
    font-weight: 600;
    font-size: 0.9rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: normal;
}

.radio-label input[type="radio"] {
    cursor: pointer;
    margin: 0;
}

.tags-search-box {
    padding: 0.5rem;
    margin-top: 0.5rem;
}

#tag-search {
    width: 100%;
    padding: 0.4rem;
    font-size: 0.9rem;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

#tag-search:focus {
    outline: none;
    border-color: var(--input-focus);
}

.tags-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.5rem;
    padding: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.tag-checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tag-checkbox-item input[type="checkbox"] {
    cursor: pointer;
}

.tag-checkbox-item label {
    cursor: pointer;
    font-size: 0.9rem;
}

.tag-checkbox-item.inactive label {
    color: var(--text-secondary);
    opacity: 0.5;
}

.tag-checkbox-item.inactive input[type="checkbox"] {
    opacity: 0.5;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

#showing-count {
    font-weight: 600;
}

.loading {
    color: var(--text-secondary);
    font-style: italic;
}

/* Table Container */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-primary);
    box-shadow: 0 1px 3px var(--shadow);
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-primary);
}

thead {
    background-color: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

th {
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    white-space: nowrap;
}

th:last-child {
    border-right: none;
}

th.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s;
}

th.sortable:hover {
    background-color: var(--bg-tertiary);
}

th.sorted-asc,
th.sorted-desc {
    background-color: var(--header-bg);
    color: var(--header-text);
}

.sort-arrow {
    display: inline-block;
    margin-left: 0.25rem;
    font-size: 0.8rem;
}

/* Table Body */
tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.15s;
}

tbody tr:hover {
    background-color: var(--bg-secondary);
}

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

td {
    padding: 0.75rem;
    border-right: 1px solid var(--border-color);
}

td:last-child {
    border-right: none;
}

.loading-cell {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer a {
    color: var(--link-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    header h1 {
        font-size: 1.5rem;
    }

    header p {
        font-size: 0.9rem;
    }

    main {
        padding: 1rem 0.5rem;
    }

    .controls-container {
        padding: 1rem;
    }

    .filters-section {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        min-width: 100%;
    }

    .tags-checkboxes {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 0.85rem;
    }

    th, td {
        padding: 0.5rem 0.4rem;
    }

    th {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    table {
        font-size: 0.75rem;
    }

    th, td {
        padding: 0.4rem 0.3rem;
    }
}

/* Scrollbar Styling for Dark Mode */
body.dark-theme .tags-checkboxes::-webkit-scrollbar,
body.dark-theme .table-container::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

body.dark-theme .tags-checkboxes::-webkit-scrollbar-track,
body.dark-theme .table-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

body.dark-theme .tags-checkboxes::-webkit-scrollbar-thumb,
body.dark-theme .table-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

body.dark-theme .tags-checkboxes::-webkit-scrollbar-thumb:hover,
body.dark-theme .table-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}