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

:root {
    --color-up: #4CAF50;
    --color-down: #f44336;
    --color-pending: #ff9800;
    --color-paused: #9e9e9e;
    --color-primary: #2196F3;
    --color-bg: #1a1a2e;
    --color-card: #16213e;
    --color-text: #eee;
    --color-text-muted: #aaa;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.navbar {
    background: var(--color-card);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-text);
}

.nav-links a {
    margin-left: 2rem;
    color: var(--color-text-muted);
}

.nav-links a:hover {
    color: var(--color-text);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.dashboard-header {
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    margin-bottom: 1rem;
}

.stats-bar {
    display: flex;
    gap: 1rem;
}

.stat {
    background: var(--color-card);
    padding: 1rem 2rem;
    border-radius: 8px;
    text-align: center;
}

.stat.up .stat-value { color: var(--color-up); }
.stat.down .stat-value { color: var(--color-down); }
.stat.paused .stat-value { color: var(--color-paused); }

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    display: block;
}

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

.monitors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.monitor-card {
    background: var(--color-card);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.monitor-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

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

.monitor-header h3 {
    margin: 0;
}

.monitor-header h3 a {
    color: var(--color-text);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}

.status-badge.up { background: var(--color-up); color: white; }
.status-badge.down { background: var(--color-down); color: white; }
.status-badge.pending { background: var(--color-pending); color: white; }
.status-badge.large { font-size: 1rem; padding: 0.5rem 1rem; }

.monitor-info {
    margin-bottom: 1rem;
}

.monitor-url {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    word-break: break-all;
}

.monitor-type {
    font-size: 0.8rem;
    color: var(--color-primary);
    margin-top: 0.25rem;
}

.monitor-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.response-time {
    color: var(--color-up);
}

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

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.9;
    text-decoration: none;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn-primary { background: var(--color-primary); color: white; }
.btn-secondary { background: #555; color: white; }
.btn-success { background: var(--color-up); color: white; }
.btn-warning { background: var(--color-pending); color: white; }
.btn-danger { background: var(--color-down); color: white; }

.empty-state {
    text-align: center;
    padding: 4rem;
    background: var(--color-card);
    border-radius: 12px;
}

.empty-state h2 {
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-card);
    padding: 2rem;
    border-radius: 12px;
}

.form-container h1 {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 1rem;
}

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

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.divider {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin: 2rem 0;
}

.danger-zone {
    padding: 1rem;
    border: 1px solid var(--color-down);
    border-radius: 8px;
}

.danger-zone h3 {
    color: var(--color-down);
    margin-bottom: 1rem;
}

.monitor-detail {
    max-width: 1000px;
    margin: 0 auto;
}

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

.detail-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.detail-info {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.detail-info p {
    margin-bottom: 0.5rem;
}

.uptime-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.uptime-card {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
}

.uptime-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--color-up);
    display: block;
}

.uptime-label {
    color: var(--color-text-muted);
}

.response-chart {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.response-chart h2 {
    margin-bottom: 1rem;
}

#responseChart {
    max-height: 300px;
}

.recent-checks {
    background: var(--color-card);
    padding: 1.5rem;
    border-radius: 12px;
}

.recent-checks h2 {
    margin-bottom: 1rem;
}

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

.results-table th,
.results-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.results-table tr.error {
    background: rgba(244, 67, 54, 0.1);
}

.status-indicator {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
}

.status-indicator.up { background: var(--color-up); }
.status-indicator.down { background: var(--color-down); }

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-box {
    background: var(--color-card);
    padding: 3rem;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-box h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.login-box h2 {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    font-weight: normal;
}

.setup-info {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.login-form {
    text-align: left;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.btn-block {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    margin-top: 0.5rem;
}

.flash-message {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    text-align: left;
}

.flash-message.error {
    background: rgba(244, 67, 54, 0.2);
    border: 1px solid var(--color-down);
    color: #ff8a80;
}

.flash-message.success {
    background: rgba(76, 175, 80, 0.2);
    border: 1px solid var(--color-up);
    color: #a5d6a7;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--color-text);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.form-description {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.form-container h2 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-user span {
    color: var(--color-text-muted);
}

.nav-user a {
    color: var(--color-text-muted);
}

.nav-user a:hover {
    color: var(--color-text);
}