/* ==================== Reset & Variables ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f5f5f5;
    --card-bg: #ffffff;
    --border: #e0e0e0;
    --text: #1a1a1a;
    --text-secondary: #666;
    --text-muted: #999;
    --primary: #2563eb;
    --primary-light: #eff4ff;
    --tag-bg: #f0f0f0;
    --tag-text: #555;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --font-loaded-bg: #f0fdf4;
    --font-loaded-border: #86efac;
    --header-height: 56px;
    --controls-height: auto;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ==================== Header ==================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.logo i {
    color: var(--primary);
    font-size: 22px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ==================== Search ==================== */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 10px;
    color: var(--text-muted);
    font-size: 16px;
    pointer-events: none;
}

.search-box input {
    padding: 7px 12px 7px 32px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    width: 200px;
    outline: none;
    transition: border-color 0.2s;
}

.search-box input:focus {
    border-color: var(--primary);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.15s;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

.btn i {
    font-size: 15px;
}

/* ==================== Controls ==================== */
.controls {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.controls-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ==================== Filter Tabs ==================== */
.filters {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.filter-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.filter-btn .count {
    font-size: 11px;
    opacity: 0.8;
    font-weight: 400;
}

.filter-btn i {
    font-size: 14px;
}

/* ==================== Preview Controls ==================== */
.preview-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.size-control {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.size-control label {
    font-weight: 500;
}

.size-control input[type="range"] {
    width: 120px;
    accent-color: var(--primary);
}

.size-control span {
    font-size: 12px;
    color: var(--text-muted);
    min-width: 36px;
}

.text-control {
    flex: 1;
    min-width: 200px;
}

.text-control input {
    width: 100%;
    padding: 7px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

.text-control input:focus {
    border-color: var(--primary);
}

/* ==================== Font Grid ==================== */
.grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px 60px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 16px;
}

/* ==================== Font Card ==================== */
.font-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.2s;
}

.font-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-1px);
}

.font-card.loaded {
    border-color: var(--font-loaded-border);
}

.font-card-header {
    padding: 14px 16px 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.font-info {
    flex: 1;
    min-width: 0;
}

.font-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.font-family {
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'Maple Mono CN', 'Menlo', 'Consolas', monospace;
}

.font-tags {
    display: flex;
    gap: 4px;
    margin-top: 6px;
    flex-wrap: wrap;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
    background: var(--tag-bg);
    color: var(--tag-text);
}

.tag-category {
    background: var(--primary-light);
    color: var(--primary);
}

.tag-loaded {
    background: #dcfce7;
    color: #16a34a;
}

.tag-loading {
    background: #fef3c7;
    color: #d97706;
}

/* Card actions */
.card-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
    font-size: 16px;
}

.icon-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.icon-btn.copied {
    background: #dcfce7;
    color: #16a34a;
}

/* Preview area */
.font-preview {
    padding: 16px;
    border-top: 1px solid var(--border);
    margin-top: 10px;
}

.preview-text {
    word-break: break-all;
    line-height: 1.5;
    transition: font-size 0.15s;
    min-height: 1.5em;
}

/* Card meta */
.font-meta {
    padding: 10px 16px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    background: #fafafa;
}

.font-meta-style {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 8px;
}

.font-meta-source {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ==================== Loading Status ==================== */
.loading-status {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 16px;
    display: none;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    box-shadow: var(--shadow-hover);
    z-index: 200;
}

.loading-status.visible {
    display: flex;
}

.loading-status i {
    animation: spin 1s linear infinite;
    font-size: 16px;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==================== Dark Preview Mode ==================== */
body.dark-preview .font-card {
    background: #1e1e2e;
    border-color: #313244;
}

body.dark-preview .font-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

body.dark-preview .preview-text {
    color: #cdd6f4;
}

body.dark-preview .font-card.loaded {
    border-color: #4ade80;
}

body.dark-preview .font-meta {
    background: #181825;
    border-color: #313244;
}

body.dark-preview .font-name {
    color: #cdd6f4;
}

body.dark-preview .font-family {
    color: #a6adc8;
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        height: auto;
        padding: 12px 16px;
        gap: 10px;
    }

    .header-actions {
        width: 100%;
    }

    .search-box {
        flex: 1;
    }

    .search-box input {
        width: 100%;
    }

    .grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }

    .filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
    }

    .filter-btn {
        flex-shrink: 0;
    }

    .preview-controls {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ==================== Scrollbar ==================== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #aaa;
}