/* 1. Theme Variables */
:root {
    --bg-color: #f9f9f9;
    --container-bg: #ffffff;
    --text-main: #222222;
    --text-muted: #666666;
    --border-color: #eeeeee;
    --input-border: #dddddd;
    --card-bg: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.05);
    --card-shadow-hover: rgba(0, 0, 0, 0.1);
    --code-bg: #f5f5f5;
    --accent-color: #0066cc;
    --accent-hover: #0052a3;
    --category-bg: #f0f0f0;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
    --bg-color: #121212;
    --container-bg: #121212;
    --text-main: #e0e0e0;
    --text-muted: #aaaaaa;
    --border-color: #2d2d2d;
    --input-border: #444444;
    --card-bg: #1e1e1e;
    --card-shadow: rgba(0, 0, 0, 0.3);
    --card-shadow-hover: rgba(0, 0, 0, 0.5);
    --code-bg: #2d2d2d;
    --accent-color: #47a1ff;
    --accent-hover: #7dbfff;
    --category-bg: #333333;
}

/* 2. Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 3. Header & Theme Toggle */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px 0;
    border-bottom: 2px solid var(--border-color);
}

.header-top {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 10px;
    position: relative;
}

.theme-icon {
    position: absolute;
    right: 0;
}

.header h1 {
    font-size: 2.5rem;
    color: var(--text-main);
}

.theme-toggle {
    background: var(--card-bg);
    border: 2px solid var(--input-border);
    color: var(--text-main);
    padding: 8px 12px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    border-color: var(--accent-color);
}

/* Icon visibility logic */
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
:root:not([data-theme="dark"]) .sun-icon { display: none; }
:root:not([data-theme="dark"]) .moon-icon { display: block; }

.header p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.snippet-badge {
    display: inline-block;
    margin-top: 10px;
    padding: 4px 12px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    opacity: 0.9;
}

/* 4. Search Section */
.search-section {
    margin-bottom: 30px;
}

/* Search Wrapper for clear button positioning */
.search-wrapper {
    position: relative;
    width: 100%;
}

.search-bar {
    width: 100%;
    padding: 12px 40px 12px 16px;
    font-size: 1rem;
    background-color: var(--card-bg);
    color: var(--text-main);
    border: 2px solid var(--input-border);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.3s ease;
}

.search-bar:focus {
    border-color: var(--accent-color);
}

/* Clear button styles */
.clear-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: 18px;
    color: var(--text-muted);
    display: none;
    line-height: 1;
    user-select: none;
}

.clear-btn:hover {
    color: var(--text-main);
}

/* 5. Filter Section */
.filter-section {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    background-color: var(--card-bg);
    color: var(--text-main);
    border: 2px solid var(--input-border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.filter-btn.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Category Dots */
.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.dot-git { background-color: #3b82f6; }
.dot-terminal { background-color: #22c55e; }
.dot-javascript { background-color: #f59e0b; }
.dot-css { background-color: #a855f7; }
.dot-react { background-color: #06b6d4; }
.dot-sql { background-color: #f97316; }
.fav-icon { font-size: 1.1rem; line-height: 1; }

/* Count badge */
.count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.filter-btn.active .count {
    color: white;
}

/* 6. Cards Container */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
    align-items: start;
}

/* 7. Card Styling */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px var(--card-shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    box-shadow: 0 4px 12px var(--card-shadow-hover);
    border-color: var(--text-muted);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 15px;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0;
    flex-grow: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.fav-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: all 0.2s ease;
    user-select: none;
}

.fav-btn:hover {
    color: #ef4444;
    transform: scale(1.1);
}

.fav-btn.active {
    color: #ef4444;
}

.heart-icon {
    transition: all 0.2s ease;
    display: block;
}

.fav-btn.active .heart-icon {
    transform: scale(1.1);
    animation: heartPop 0.3s ease-out;
}

.card-category {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background-color: var(--category-bg);
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.card-description {
    color: var(--text-muted);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

/* 8. Code Block */
.card-code {
    background-color: var(--code-bg);
    border-left: 3px solid var(--accent-color);
    color: var(--text-main);
    padding: 12px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    max-height: 180px;
    overflow-x: auto;
    overflow-y: auto;
    flex-shrink: 1; 
    min-height: 0;  
    margin-bottom: 12px;
    border-radius: 4px;
    line-height: 1.4;
    white-space: pre-wrap;
}

/* 9. Copy Button */
.copy-btn {
    align-self: flex-start;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.3s ease;
    margin-top: auto;
}

.copy-btn:hover {
    background-color: var(--accent-hover);
}

.copy-btn.copied {
    background-color: #28a745;
}

/* 10. No Results Message */
.no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.no-results p {
    font-size: 1.1rem;
}

/* Bottom */
.footer-bottom {
  text-align: center;
  margin: 15px;
  border-top: 1px solid #374151;
  padding-top: 10px;
  font-size: 15px;
}

/* 11. Responsive Design */
@media (max-width: 768px) {
    .header h1 { font-size: 2rem; }
    .cards-container { grid-template-columns: 1fr; }
    .filter-section { gap: 8px; }
    .filter-btn { padding: 6px 12px; font-size: 0.9rem; }
}

@media (max-width: 480px) {
    .search-bar { padding: 10px 12px; }
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 6px;
    padding: 0 4px;
}

.result-count {
    font-size: 13px;
    color: var(--text-muted);
}

.clear-all-link {
    background: none;
    border: none;
    padding: 0;
    color: #dc3545;
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 3px;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.clear-all-link:hover {
    opacity: 0.7;
}

/* Favorites Minimal Header */
.favorites-header {
    text-align: right;
    margin-bottom: 8px;
    padding: 4px 0;
}

/* 12. Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--card-bg);
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px var(--card-shadow-hover);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    transform: translateY(10px);
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px var(--card-shadow-hover);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}