:root {
    color-scheme: dark;
    --bg: #090b0f;
    --panel: #121923;
    --line: #273545;
    --text: #f7f9fc;
    --muted: #9aa8b7;
    --blue: #62a8ff;
    --green: #67dc91;
    --amber: #f3bd54;
    --red: #ff6f6f;
    --shadow: 0 18px 54px rgba(0, 0, 0, 0.36);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100dvh;
    margin: 0;
    background:
        linear-gradient(180deg, rgba(98, 168, 255, 0.1), transparent 32rem),
        var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    letter-spacing: 0;
}

button {
    font: inherit;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 12px clamp(12px, 3vw, 28px);
    border-bottom: 1px solid var(--line);
    background: rgba(9, 11, 15, 0.92);
    backdrop-filter: blur(16px);
}

.brand {
    color: var(--text);
    font-weight: 900;
    text-decoration: none;
}

nav {
    display: flex;
    gap: 6px;
}

nav a {
    display: grid;
    min-height: 36px;
    place-items: center;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 0 10px;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 800;
    text-decoration: none;
}

nav a:hover {
    border-color: var(--line);
    color: var(--text);
}

.page {
    width: min(1100px, 100%);
    margin: 0 auto;
    padding: clamp(26px, 5vw, 56px) clamp(12px, 3vw, 28px) 42px;
}

.hero {
    display: grid;
    gap: 16px;
    margin-bottom: 18px;
}

.eyebrow {
    margin: 0;
    color: var(--green);
    font-size: 0.82rem;
    font-weight: 900;
    text-transform: uppercase;
}

h1 {
    margin: 0;
    font-size: clamp(2.6rem, 9vw, 5.5rem);
    line-height: 0.94;
    letter-spacing: 0;
}

.tagline {
    max-width: 760px;
    margin: 0;
    color: #c7d1dc;
    font-size: clamp(1rem, 2.4vw, 1.22rem);
    line-height: 1.5;
}

.enable-btn {
    width: min(240px, 100%);
    min-height: 46px;
    border: 1px solid rgba(103, 220, 145, 0.55);
    border-radius: 8px;
    background: #13231a;
    color: var(--green);
    font-weight: 900;
}

.enable-btn.disabled {
    opacity: 0.58;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.card {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01)), var(--panel);
    padding: 14px;
    box-shadow: var(--shadow);
}

.card.wide {
    grid-column: span 2;
}

.card h2 {
    margin: 0 0 12px;
    font-size: 1.12rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.metric {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #0d141c;
    padding: 9px;
}

.metric span {
    display: block;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 900;
    text-transform: uppercase;
}

.metric strong {
    display: block;
    overflow-wrap: anywhere;
    margin-top: 5px;
    color: var(--blue);
    font-size: 1rem;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.status {
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #0d141c;
    padding: 10px;
    color: var(--muted);
    font-weight: 900;
}

.status.ok {
    color: var(--green);
}

.status.no {
    color: var(--red);
}

.jitter {
    min-height: 34px;
    overflow-wrap: anywhere;
    margin: 10px 0 0;
    color: #d8e5f0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.82rem;
}

footer {
    display: flex;
    justify-content: center;
    gap: 16px;
    border-top: 1px solid var(--line);
    padding: 26px 16px;
    color: var(--muted);
}

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

#siteToast {
    position: fixed;
    z-index: 2100;
    left: 50%;
    top: max(12px, env(safe-area-inset-top));
    width: min(420px, calc(100% - 24px));
    transform: translate(-50%, -12px);
    padding: 10px 12px;
    border: 1px solid rgba(98, 168, 255, 0.45);
    border-radius: 8px;
    background: rgba(8, 14, 19, 0.94);
    color: var(--text);
    font-size: 0.84rem;
    font-weight: 800;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
}

#siteToast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

@media (max-width: 860px) {
    .grid {
        grid-template-columns: 1fr;
    }

    .card.wide {
        grid-column: auto;
    }
}

@media (max-width: 520px) {
    .topbar {
        grid-template-columns: 1fr;
    }

    nav {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }

    nav a {
        border-color: var(--line);
    }

    .metric-grid,
    .status-grid {
        grid-template-columns: 1fr;
    }
}