:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-card-hover: #1a1a1a;
    --border-color: #2a2a2a;
    --text-primary: #e8e8e8;
    --text-secondary: #888888;
    --text-muted: #555555;
    --accent-green: #00ff88;
    --accent-green-dim: #00cc6a;
    --accent-yellow: #ffcc00;
    --accent-yellow-dim: #cc9900;
    --accent-red: #ff4444;
    --accent-red-dim: #cc3333;
    --accent-blue: #4488ff;
    --grid-line: rgba(255, 255, 255, 0.03);
}

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

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

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

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

.logo-icon {
    width: 48px; height: 48px;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dim) 100%);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700; font-size: 1.2rem;
    color: var(--bg-primary);
}

.logo-text h1 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem; font-weight: 600; letter-spacing: -0.02em;
}

.logo-text span {
    font-size: 0.8rem; color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.last-update {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem; color: var(--text-muted); text-align: right;
}

.last-update .time { color: var(--text-secondary); font-size: 0.85rem; }

.summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

@media (max-width: 900px) { .summary { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .summary { grid-template-columns: 1fr; } }

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px; padding: 1.25rem;
    position: relative; overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--card-accent, var(--text-muted));
}

.summary-card.total::before  { background: var(--accent-blue); }
.summary-card.ok::before     { background: var(--accent-green); }
.summary-card.warning::before { background: var(--accent-yellow); }
.summary-card.error::before  { background: var(--accent-red); }

.summary-card .label {
    font-size: 0.75rem; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 0.5rem;
}

.summary-card .value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem; font-weight: 700; line-height: 1;
}

.summary-card.total .value   { color: var(--accent-blue); }
.summary-card.ok .value      { color: var(--accent-green); }
.summary-card.warning .value { color: var(--accent-yellow); }
.summary-card.error .value   { color: var(--accent-red); }

main { margin-top: 2rem; }

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

.section-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem; font-weight: 500;
    color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.1em;
}

.refresh-btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem; padding: 0.5rem 1rem;
    background: transparent; border: 1px solid var(--border-color);
    color: var(--text-secondary); border-radius: 4px;
    cursor: pointer; transition: all 0.2s ease;
    display: flex; align-items: center; gap: 0.5rem;
}

.refresh-btn:hover { border-color: var(--accent-green); color: var(--accent-green); }
.refresh-btn.loading { opacity: 0.5; pointer-events: none; }
.refresh-btn svg { width: 14px; height: 14px; }
.refresh-btn.loading svg { animation: spin 1s linear infinite; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
    gap: 1rem;
}

@media (max-width: 500px) { .servers-grid { grid-template-columns: 1fr; } }

.server-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px; padding: 1.5rem;
    transition: all 0.2s ease; position: relative;
}

.server-card:hover { background: var(--bg-card-hover); border-color: #333; }

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

.status-indicator {
    width: 12px; height: 12px;
    border-radius: 50%;
    animation: pulse 2s infinite;
    flex-shrink: 0;
}

.server-card.ok .status-indicator     { background: var(--accent-green); box-shadow: 0 0 12px var(--accent-green); }
.server-card.warning .status-indicator { background: var(--accent-yellow); box-shadow: 0 0 12px var(--accent-yellow); }
.server-card.error .status-indicator,
.server-card.unknown .status-indicator { background: var(--accent-red); box-shadow: 0 0 12px var(--accent-red); }

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

.server-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem; font-weight: 600;
}

.backend-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    border: 1px solid;
}

.backend-pill.ok {
    background: rgba(0, 255, 136, 0.08);
    border-color: rgba(0, 255, 136, 0.3);
    color: var(--accent-green);
}

.backend-pill.warning {
    background: rgba(255, 204, 0, 0.08);
    border-color: rgba(255, 204, 0, 0.3);
    color: var(--accent-yellow);
}

.backend-pill.error, .backend-pill.unknown {
    background: rgba(255, 68, 68, 0.08);
    border-color: rgba(255, 68, 68, 0.3);
    color: var(--accent-red);
}

.backend-pill .pill-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.backend-pill .pill-label { font-weight: 600; }
.backend-pill .pill-age { opacity: 0.75; }

.backend-section { margin-bottom: 0.75rem; }
.backend-section:last-child { margin-bottom: 0; }
.backend-section .backend-pill { margin-bottom: 0.4rem; }
.backend-section .snapshot-list { padding-left: 0.5rem; }

.snapshot-list { display: flex; flex-direction: column; gap: 0.25rem; }

.snapshot-item {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem; color: var(--text-secondary);
    display: flex; align-items: center; gap: 0.5rem;
}

.snapshot-id {
    color: var(--accent-blue);
    background: rgba(68, 136, 255, 0.1);
    padding: 0.1rem 0.4rem; border-radius: 3px;
}

.snapshot-time { color: var(--text-muted); }
.snapshot-size { color: var(--text-secondary); margin-left: auto; }
.snapshot-added { color: var(--accent-green-dim); }

.error-message {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem; color: var(--accent-red);
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.2);
    border-radius: 4px; padding: 0.75rem; margin-top: 0.5rem;
    word-break: break-word;
}

.loading-container {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    min-height: 300px; gap: 1rem;
}

.loading-spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem; color: var(--text-secondary);
}

.error-container {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    min-height: 300px; gap: 1rem; text-align: center;
}

.error-icon { font-size: 3rem; }
.error-title { font-family: 'JetBrains Mono', monospace; font-size: 1.1rem; color: var(--accent-red); }
.error-description { font-size: 0.85rem; color: var(--text-secondary); max-width: 400px; }

footer {
    margin-top: 3rem; padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-text { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: var(--text-muted); }
.footer-text a { color: var(--text-secondary); text-decoration: none; }
.footer-text a:hover { color: var(--accent-green); }