/* File Manager - Light Theme (ค่าเริ่มต้น) */
:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --border-color: #dee2e6;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --accent-blue: #0d6efd;
    --accent-green: #198754;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

.card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

.card-header {
    background-color: #f1f3f5;
    border-bottom-color: var(--border-color);
}

.card-footer {
    background-color: #f1f3f5;
    border-top-color: var(--border-color);
}

/* Stat Cards */
.stat-card {
    border: none;
    border-radius: 12px;
    transition: transform 0.2s;
    box-shadow: var(--shadow);
}
.stat-card:hover { transform: translateY(-2px); }
.stat-icon { font-size: 2.5rem; opacity: 0.2; }

/* File Card — ปรับให้กว้างขึ้น ไม่ถูกบีบ */
.file-card {
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
    min-width: 200px;           /* ป้องกันบีบเกินไป */
}
.file-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.file-preview {
    height: 180px;              /* เพิ่มความสูง preview */
    background: #f1f3f5;
    overflow: hidden;
}
.file-preview iframe { pointer-events: none; }

/* File Card Small — สำหรับ embed */
.file-card-sm {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    min-width: 150px;           /* ป้องกันบีบ */
}
.file-preview-sm {
    height: 120px;              /* เพิ่มความสูง */
    background: #f1f3f5;
    overflow: hidden;
}
.file-preview-sm iframe { pointer-events: none; }

/* Grid สำหรับ embed — บังคับคอลัมน์ขั้นต่ำ */
.embed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}

/* Skip Navigation */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    z-index: 10000;
    padding: 8px 16px;
    background: #0d6efd;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
}
.skip-link:focus {
    top: 0;
    outline: 3px solid #ffbf47;
}
/* WCAG Focus Styles */
:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
}
.btn:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.3);
}
.form-control:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 0;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.2);
}
.form-select:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 0;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.2);
}
/* Tags */
.badge { font-weight: 500; }

/* Table */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--border-color);
}
.table thead th {
    background-color: #f1f3f5;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}
.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.04) !important;
}

/* Forms */
.form-control, .form-select {
    background-color: #fff;
    border-color: #ced4da;
    color: var(--text-primary);
}
.form-control:focus, .form-select:focus {
    background-color: #fff;
    border-color: var(--accent-blue);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}
.form-control::placeholder { color: #adb5bd; }

/* Navbar */
.navbar-dark { background-color: #212529 !important; }

/* Buttons */
.btn-outline-light {
    border-color: #ced4da;
    color: var(--text-secondary);
}
.btn-outline-light:hover, .btn-outline-light.active {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

/* Alerts */
.alert-success {
    background-color: rgba(25, 135, 84, 0.1);
    border-color: rgba(25, 135, 84, 0.2);
    color: #0f5132;
}
.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: rgba(220, 53, 69, 0.2);
    color: #842029;
}

/* Modal */
.modal-content {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}
.modal-header, .modal-footer { border-color: var(--border-color); }

/* Embed code */
.embed-code {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    background: #1a1a2e !important;
    color: #a8ff78 !important;
    border-color: var(--border-color) !important;
}

/* Upload zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: #fafafa;
}
.upload-zone:hover {
    border-color: var(--accent-blue);
    background: rgba(13, 110, 253, 0.03);
}

/* Tag select */
.tag-select-btn .badge { transition: all 0.2s; }
.tag-select-btn.active .badge { box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.3); }

/* Disabled user */
.user-disabled { opacity: 0.5; text-decoration: line-through; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a1a1a1; }

/* Responsive */
@media (max-width: 768px) {
    .file-preview { height: 140px; }
    .file-preview-sm { height: 100px; }
    .embed-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}