:root {
    --bg-base: #0a101d;
    --card-bg: rgba(16, 24, 40, 0.85);
    --card-border: rgba(255, 255, 255, 0.12);
    --accent-cyan: #38bdf8;
    --accent-cyan-hover: #7dd3fc;
    --accent-blue-btn: #0284c7;
    --accent-blue-btn-hover: #0369a1;
    --accent-green: #10b981;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

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

body {
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-base);
    background-image: 
        radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
}

/* Středový kontejner – drží obsah pohromadě a neroztahuje ho po celé šířce */
.container {
    width: 100%;
    max-width: 1100px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* --- HLAVIČKA --- */
header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-bottom: 5px;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #34d399;
    letter-spacing: 0.3px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-green);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

h1 {
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #ffffff 40%, #7dd3fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 680px;
    line-height: 1.6;
}

/* --- ŽIVÝ PANEL Z GRAFANY (ZVĚTŠENÝ) --- */
.live-panel-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(14px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.live-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.live-panel-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
}

.panel-icon {
    font-size: 1.35rem;
}

.live-tag {
    font-size: 0.8rem;
    background: rgba(56, 189, 248, 0.15);
    color: var(--accent-cyan);
    border: 1px solid rgba(56, 189, 248, 0.35);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

/* Zvětšená výška okna pro detailní a prostorný graf */
.iframe-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #0b1120;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.iframe-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* --- MŘÍŽKA 6 KARET (SERVICES) --- */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 22px;
}

.service-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 26px;
    backdrop-filter: blur(14px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.45);
    box-shadow: 0 12px 30px rgba(2, 132, 199, 0.22);
}

.card-content {
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.card-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #ffffff;
}

.card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Tlačítka s vysokým kontrastem */
.btn-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 20px;
    background: linear-gradient(135deg, var(--accent-blue-btn) 0%, #0274b3 100%);
    color: #ffffff !important;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(56, 189, 248, 0.3);
    box-shadow: 0 4px 15px rgba(2, 132, 199, 0.35);
    transition: all 0.2s ease;
    text-decoration: none !important;
}

.btn-link:hover {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue-btn) 100%);
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.45);
}

.arrow {
    transition: transform 0.2s ease;
}

.btn-link:hover .arrow {
    transform: translateX(4px);
}

/* --- INFRASTRUKTURA / PATIČKA --- */
.info-card {
    background: rgba(13, 20, 36, 0.9);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
}

.info-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 18px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    color: var(--accent-cyan);
    font-size: 0.98rem;
    font-weight: 700;
}

footer {
    margin-top: 15px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    h1 { font-size: 2.1rem; }
    .subtitle { font-size: 0.95rem; }
    .iframe-wrapper { height: 260px; }
    .grid-cards { grid-template-columns: 1fr; }
}