/* Variables */
:root {
    --primary: #2563eb;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
header {
    background: var(--card-bg);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
}

#refresh-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

#refresh-btn:hover {
    background: #1d4ed8;
}

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

/* Main content */
main {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Summary cards */
#summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.card span {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

/* Keys table section */
#keys-table {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--bg);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
    cursor: pointer;
    user-select: none;
}

th:hover {
    background: #f1f5f9;
}

th .sort-icon {
    margin-left: 0.25rem;
    font-size: 0.75rem;
    opacity: 0.5;
}

th.sorted .sort-icon {
    opacity: 1;
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

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

tbody tr:hover {
    background: #f8fafc;
}

tbody tr.disabled {
    opacity: 0.5;
}

tbody tr.warning {
    background: #fef3c7;
}

tbody tr.warning:hover {
    background: #fde68a;
}

tbody tr.danger {
    background: #fee2e2;
}

tbody tr.danger:hover {
    background: #fecaca;
}

/* Code styling */
code {
    background: #f1f5f9;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: #334155;
}

/* Status indicators */
.status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.status.active {
    color: var(--success);
}

.status.disabled {
    color: var(--danger);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status.active .status-dot {
    background: var(--success);
}

.status.disabled .status-dot {
    background: var(--danger);
}

/* Loading state */
#loading {
    display: none;
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

#loading.active {
    display: block;
}

#loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 0.5rem;
    vertical-align: middle;
}

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

/* Error message */
#error {
    display: none;
    background: #fee2e2;
    border: 1px solid #fecaca;
    color: #991b1b;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

#error.active {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#error .error-icon {
    font-size: 1.25rem;
}

/* Empty state */
#empty-state {
    display: none;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

#empty-state.active {
    display: block;
}

#empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    #refresh-btn {
        width: 100%;
    }

    main {
        padding: 1rem;
    }

    #summary {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 0.85rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }

    /* Scrollable table on mobile */
    #keys-table {
        overflow-x: auto;
    }
}

/* Search bar */
#search-container {
    margin-bottom: 1rem;
}

#search-input {
    width: 100%;
    max-width: 400px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
    background: var(--card-bg);
}

#search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Auto-refresh indicator */
#auto-refresh {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

#auto-refresh .indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}