:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    padding: 2rem;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Dashboard Summary */
.dashboard-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.summary-card {
    background: rgba(0,0,0,0.25);
    border-radius: 12px;
    padding: 1.25rem 1rem;
    text-align: center;
    border: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.summary-card h3 {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    align-items: flex-start;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.35rem;
    line-height: 1.2;
    opacity: 0.75;
}

.stat-success .stat-value { color: var(--success-color); }
.stat-error .stat-value { color: var(--error-color); }
.stat-warning .stat-value { color: #f59e0b; }
.stat-pending .stat-value { color: var(--warning-color); }

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
}

.main-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.main-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
    align-items: center;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group input,
.filter-group select {
    width: 100%;
    padding: 0.6rem 1rem;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: white;
    font-family: 'Inter', sans-serif;
    outline: none;
}

.filter-group input:focus,
.filter-group select:focus {
    border-color: var(--primary-color);
}

.filter-group select option {
    background: var(--bg-color);
    color: var(--text-color);
}

.btn {
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

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

.primary-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

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

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.danger-btn {
    background-color: var(--danger-color);
    color: white;
}

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

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.status-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.status-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.client-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255,255,255,0.1);
}

.card-body {
    flex-grow: 1;
}

.card-body p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.status-indicator {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.status-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status-error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error-color);
}

.status-processing {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
    animation: pulse 1.5s infinite;
}

.status-warning {
    background: rgba(251, 191, 36, 0.2);
    color: #f59e0b;
}

.status-untested {
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
}

.status-disabled {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-muted);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--glass-border);
    padding-top: 1rem;
    margin-top: auto;
}

.last-check {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .modal-body {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.form-group input, .form-group select {
    width: 100%;
    padding: 0.75rem;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: white;
    font-family: 'Inter', sans-serif;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.hidden {
    display: none !important;
}

.sites-list-container {
    border-left: 1px solid var(--glass-border);
    padding-left: 2rem;
}

@media (max-width: 768px) {
    .sites-list-container {
        border-left: none;
        border-top: 1px solid var(--glass-border);
        padding-left: 0;
        padding-top: 2rem;
    }
}

.sites-list {
    list-style: none;
    margin-top: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.site-list-item {
    padding: 0.75rem;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background 0.2s;
}

.site-list-item:hover {
    background: rgba(255,255,255,0.1);
}

.site-list-item.active {
    border-left: 3px solid var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--success-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 2000;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.error {
    background: var(--error-color);
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}