/* S3 File Manager - Modern, clean layout */

:root {
    --bg: #0f1419;
    --surface: #1a2332;
    --surface-hover: #243044;
    --border: #2d3a4d;
    --text: #e6edf3;
    --text-muted: #8b9cb3;
    --accent: #58a6ff;
    --accent-hover: #79b8ff;
    --danger: #f85149;
    --danger-hover: #ff6b6b;
    --success: #3fb950;
    --radius: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header */
.header {
    margin-bottom: 2rem;
    text-align: center;
}

.header h1 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 600;
}

.subtitle {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.header-meta {
    margin: 0.5rem 0 0;
    font-size: 0.85rem;
}

.header-meta a {
    color: var(--accent);
    text-decoration: none;
}

.header-meta a:hover {
    text-decoration: underline;
}

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.card h2 {
    margin: 0 0 1rem;
    font-size: 1.15rem;
    font-weight: 600;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.section-header h2 {
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.breadcrumb-sep {
    margin: 0 0.35rem;
}

.breadcrumb-link {
    color: var(--accent);
    text-decoration: none;
}

.breadcrumb-link:hover {
    text-decoration: underline;
}

/* Folder list */
.folders-wrap {
    margin-bottom: 1rem;
}

.folders-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.folder-link {
    color: var(--accent);
    text-decoration: none;
}

.folder-link:hover {
    text-decoration: underline;
}

/* Upload form */
.upload-hint {
    margin: -0.5rem 0 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.upload-form .form-row {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

.upload-form input[type="file"] {
    flex: 1;
    min-width: 180px;
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.9rem;
}

.upload-form input[type="file"]::file-selector-button {
    margin-right: 0.75rem;
    padding: 0.35rem 0.75rem;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    cursor: pointer;
}

.folder-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.folder-select {
    min-width: 12rem;
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.9rem;
}

/* Setup flow */
.setup-steps {
    max-width: 28rem;
}

.setup-step {
    margin-bottom: 0;
}

.setup-step h2 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
}

.setup-hint {
    margin: 0 0 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.setup-select-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.setup-select-wrap label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.setup-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--border);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: #fff;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.8rem;
}

/* Messages */
.error-message,
.success-message {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    display: none;
}

.error-message.visible {
    display: block;
    color: var(--danger);
}

.success-message.visible {
    display: block;
    color: var(--success);
}

/* Loading & empty */
.loading {
    color: var(--text-muted);
    padding: 1rem 0;
}

.empty-state {
    color: var(--text-muted);
    padding: 2rem;
    text-align: center;
}

/* Table */
.table-wrap {
    overflow-x: auto;
}

.files-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.files-table th,
.files-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.files-table th {
    color: var(--text-muted);
    font-weight: 500;
}

.files-table tbody tr:hover {
    background: var(--surface-hover);
}

/* Thumbnail */
.file-preview {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--bg);
}

.file-preview-placeholder {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-hover);
    border-radius: 4px;
    border: 1px solid var(--border);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
}

.preview-link {
    color: var(--accent);
    text-decoration: none;
}

.preview-link:hover {
    text-decoration: underline;
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    cursor: pointer;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem;
    box-shadow: var(--shadow);
}

.modal-close {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: none;
    background: var(--surface-hover);
    color: var(--text);
    font-size: 1.25rem;
    line-height: 1;
    border-radius: 4px;
    cursor: pointer;
    z-index: 1;
}

.modal-close:hover {
    background: var(--danger);
    color: #fff;
}

.modal-content img {
    display: block;
    max-width: 85vw;
    max-height: 85vh;
    object-fit: contain;
}