/* Google Fonts - Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-main: #0b0f19;
    --bg-card: #131926;
    --bg-card-hover: #171f30;
    --border-color: #1e293b;
    --border-color-focus: #3b82f6;
    
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    --status-up: #10b981;
    --status-up-bg: rgba(16, 185, 129, 0.1);
    --status-down: #f43f5e;
    --status-down-bg: rgba(244, 63, 94, 0.1);
    --status-paused: #64748b;
    --status-paused-bg: rgba(100, 116, 139, 0.1);
    --status-unknown: #d97706;
    --status-unknown-bg: rgba(217, 119, 6, 0.1);

    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-bg: rgba(59, 130, 246, 0.1);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

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

body {
    background-color: var(--bg-main);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    padding: 0;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

/* Header Section */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.logo-area h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-area h1 span.badge {
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--primary-bg);
    color: var(--primary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.logo-area p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.actions-area {
    display: flex;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--bg-card);
    color: var(--color-text-primary);
}

.btn:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--color-text-muted);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.3);
}

.btn-icon {
    padding: 0.625rem;
    aspect-ratio: 1;
}

/* System Overall Status */
.overall-status-banner {
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid transparent;
}

.overall-status-banner.all-up {
    background-color: var(--status-up-bg);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--status-up);
}

.overall-status-banner.some-down {
    background-color: var(--status-down-bg);
    border-color: rgba(244, 63, 94, 0.2);
    color: var(--status-down);
}

.overall-status-banner .status-pulse {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: currentColor;
    position: relative;
}

.overall-status-banner .status-pulse::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    border: 2px solid currentColor;
    opacity: 0.4;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(2); opacity: 0; }
}

.overall-status-banner h2 {
    font-size: 1rem;
    font-weight: 600;
}

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-label {
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 0.5rem;
    letter-spacing: -0.02em;
}

/* Monitors List Section */
.monitors-section {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.monitors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.5rem;
}

/* Monitor Card */
.monitor-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.monitor-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-text-muted);
}

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

.monitor-info {
    flex: 1;
    min-width: 0;
}

.monitor-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.monitor-url {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 0.15rem;
}

.monitor-url a {
    color: inherit;
    text-decoration: none;
}

.monitor-url a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    text-transform: capitalize;
}

.status-badge.up {
    background-color: var(--status-up-bg);
    color: var(--status-up);
}

.status-badge.down {
    background-color: var(--status-down-bg);
    color: var(--status-down);
}

.status-badge.paused {
    background-color: var(--status-paused-bg);
    color: var(--status-paused);
}

.status-badge.unknown {
    background-color: var(--status-unknown-bg);
    color: var(--status-unknown);
}

/* Latency & Uptime Block */
.monitor-metrics {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}

.metric-item {
    display: flex;
    flex-direction: column;
}

.metric-label {
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    margin-bottom: 0.15rem;
}

.metric-value {
    font-weight: 600;
}

/* History Uptime Timeline */
.history-timeline {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.timeline-blocks {
    display: flex;
    gap: 4px;
    height: 24px;
}

.timeline-block {
    flex: 1;
    border-radius: 3px;
    background-color: var(--border-color);
    position: relative;
    cursor: pointer;
    transition: transform 0.1s ease;
}

.timeline-block:hover {
    transform: scaleY(1.2);
    z-index: 10;
}

.timeline-block.up {
    background-color: var(--status-up);
}

.timeline-block.down {
    background-color: var(--status-down);
}

.timeline-block.paused {
    background-color: var(--status-paused);
}

/* Tooltip on Block Hover */
.timeline-block .tooltip {
    visibility: hidden;
    position: absolute;
    bottom: 130%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    color: #fff;
    text-align: center;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    white-space: nowrap;
    z-index: 100;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.timeline-block:hover .tooltip {
    visibility: visible;
    opacity: 1;
}

.timeline-block .tooltip::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #1e293b transparent transparent transparent;
}

/* Card Footer Controls */
.monitor-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: auto;
}

.btn-card-action {
    background-color: transparent;
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-card-action:hover {
    background-color: var(--border-color);
    color: var(--color-text-primary);
}

.btn-card-action.danger:hover {
    background-color: var(--status-down-bg);
    border-color: rgba(244, 63, 94, 0.3);
    color: var(--status-down);
}

/* Incidents Logs List */
.incidents-section {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.incidents-table-wrapper {
    overflow-x: auto;
}

.incidents-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    text-align: left;
}

.incidents-table th {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.incidents-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.incidents-table tr:last-child td {
    border-bottom: none;
}

.incidents-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.01);
}

.incidents-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.5rem;
}

.incidents-status-dot.active {
    background-color: var(--status-down);
    box-shadow: 0 0 8px var(--status-down);
}

.incidents-status-dot.resolved {
    background-color: var(--status-up);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(7, 10, 17, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 480px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
}

.modal-close:hover {
    color: var(--color-text-primary);
}

/* Form Styling */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-control {
    width: 100%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-color-focus);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 2rem;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--color-text-secondary);
}

.empty-state p {
    margin-bottom: 1.5rem;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .actions-area {
        width: 100%;
    }
    
    .actions-area .btn {
        flex: 1;
    }
    
    .app-container {
        padding: 1.5rem 1rem;
    }
}