/* =====================================================================
   monitor.visiotech.cz -- landing page styling
   ---------------------------------------------------------------------
   VisiO Tech color scheme:
     bg primary    #0d1117 (near-black, GitHub-dark inspired)
     bg secondary  #161b22 (panels)
     bg tertiary   #1f2937 (cards, raised)
     border        #2d3748
     text primary  #e6edf3 (off-white)
     text muted    #7d8590
     accent teal   #00d4aa (VisiO brand)
     status green  #2ea043
     status amber  #d29922
     status red    #f85149
   Mobile-first; uses CSS grid + flexbox; no external CDN.
   ===================================================================== */

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

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1f2937;
    --border: #2d3748;
    --text-primary: #e6edf3;
    --text-muted: #7d8590;
    --accent: #00d4aa;
    --accent-dim: #008f72;
    --status-ok: #2ea043;
    --status-warn: #d29922;
    --status-crit: #f85149;
    --status-unknown: #6e7681;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

html, body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dim); }

code {
    font-family: "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.85em;
    color: var(--accent);
}

.hidden { display: none !important; }

/* ============ TOP BAR ============ */
.topbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    background: var(--accent);
    color: var(--bg-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 24px;
    box-shadow: 0 2px 8px rgba(0, 212, 170, 0.3);
}

.brand-text h1 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.2;
}

.brand-text .subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.meta {
    display: flex;
    gap: 24px;
    align-items: center;
}

.meta-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 12px;
}

.meta-label {
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.05em;
}

.meta-value {
    color: var(--text-primary);
    font-family: "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 13px;
    margin-top: 2px;
}

/* ============ CONTAINER ============ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 24px 80px 24px;
}

/* ============ CARDS ============ */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge {
    background: var(--status-crit);
    color: white;
    border-radius: 10px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 700;
}

/* ============ ALERTS ============ */
.alerts-card {
    border-left: 4px solid var(--status-crit);
}

.alert-list {
    list-style: none;
    margin: 0;
}

.alert-item {
    background: var(--bg-tertiary);
    border-left: 3px solid var(--status-crit);
    padding: 10px 14px;
    margin-bottom: 8px;
    border-radius: 4px;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.alert-item.severity-warning {
    border-left-color: var(--status-warn);
}

.alert-item.severity-info {
    border-left-color: var(--accent);
}

.alert-name {
    font-weight: 600;
    color: var(--text-primary);
}

.alert-summary {
    color: var(--text-muted);
    margin-top: 2px;
    font-size: 12px;
}

.alert-time {
    color: var(--text-muted);
    font-family: "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 11px;
    white-space: nowrap;
}

/* ============ STATUS DOTS ============ */
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.dot-ok       { background: var(--status-ok); box-shadow: 0 0 6px rgba(46, 160, 67, 0.6); }
.dot-warn     { background: var(--status-warn); box-shadow: 0 0 6px rgba(210, 153, 34, 0.6); }
.dot-critical { background: var(--status-crit); box-shadow: 0 0 6px rgba(248, 81, 73, 0.6); }
.dot-unknown  { background: var(--status-unknown); }

/* ============ SERVICE TILES ============ */
.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
}

.tile {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
    display: block;
    color: var(--text-primary);
    transition: border-color 0.15s, transform 0.15s;
    position: relative;
}

.tile:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.tile-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.tile-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.tile-desc {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 8px;
}

.tile-state {
    font-family: "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tile-state.state-ok    { color: var(--status-ok); }
.tile-state.state-warn  { color: var(--status-warn); }
.tile-state.state-crit  { color: var(--status-crit); }
.tile-state.state-unknown { color: var(--status-unknown); }

/* Status indicator -- big emoji-style dot in the header */
.tile-status {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--status-unknown);
    flex-shrink: 0;
    color: transparent;
    line-height: 0;
    overflow: hidden;
    transition: background 0.3s, box-shadow 0.3s;
}

.tile-status[data-status="ok"]      { background: var(--status-ok); box-shadow: 0 0 8px rgba(46, 160, 67, 0.7); }
.tile-status[data-status="warn"]    { background: var(--status-warn); box-shadow: 0 0 8px rgba(210, 153, 34, 0.7); }
.tile-status[data-status="crit"]    { background: var(--status-crit); box-shadow: 0 0 8px rgba(248, 81, 73, 0.7); }
.tile-status[data-status="unknown"] { background: var(--status-unknown); }

/* ============ QUICK LINKS ============ */
.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.quicklink {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 4px;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
}

.quicklink:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.quicklink strong {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 4px;
}

.quicklink span {
    color: var(--text-muted);
    font-size: 12px;
}

/* ============ FOOTER ============ */
.footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 12px;
    text-align: center;
}

.footer p { margin-bottom: 4px; }

.footer-meta {
    font-family: "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 11px;
    margin-top: 10px;
}

/* ============ MOBILE ============ */
@media (max-width: 640px) {
    .topbar {
        padding: 12px 16px;
        flex-direction: column;
        align-items: flex-start;
    }

    .meta {
        width: 100%;
        justify-content: space-between;
        gap: 12px;
    }

    .meta-item {
        align-items: flex-start;
    }

    .container {
        padding: 16px 12px 60px 12px;
    }

    .card {
        padding: 16px;
    }

    .tile-grid {
        grid-template-columns: 1fr;
    }

    .link-grid {
        grid-template-columns: 1fr;
    }

    .brand-text h1 {
        font-size: 16px;
    }
}

/* ============ SMALL ANIMATIONS ============ */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.5; }
}

.tile-status[data-status="unknown"] {
    animation: pulse 1.6s ease-in-out infinite;
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .tile, .tile-status { transition: none; animation: none; }
}