:root {
    --bg: #06111c;
    --bg-deep: #020811;
    --panel: rgba(7, 18, 30, 0.82);
    --panel-strong: rgba(10, 25, 41, 0.96);
    --panel-border: rgba(148, 163, 184, 0.16);
    --text: #edf2f7;
    --text-soft: rgba(226, 232, 240, 0.74);
    --text-muted: rgba(148, 163, 184, 0.9);
    --accent: #4fd1b5;
    --accent-strong: #14b8a6;
    --warning: #f6c453;
    --danger: #fb7185;
    --error: #94a3b8;
    --shadow: 0 30px 80px rgba(2, 8, 23, 0.48);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Avenir Next", "IBM Plex Sans", "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 20% 18%, rgba(20, 184, 166, 0.18), transparent 28%),
        radial-gradient(circle at 80% 12%, rgba(59, 130, 246, 0.16), transparent 24%),
        linear-gradient(180deg, #081524 0%, var(--bg) 45%, var(--bg-deep) 100%);
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    border-radius: 999px;
    pointer-events: none;
    filter: blur(24px);
    opacity: 0.5;
    z-index: 0;
}

body::before {
    width: 18rem;
    height: 18rem;
    top: 10%;
    left: -4rem;
    background: rgba(79, 209, 181, 0.18);
}

body::after {
    width: 24rem;
    height: 24rem;
    right: -8rem;
    bottom: 12%;
    background: rgba(14, 165, 233, 0.14);
}

.page-shell {
    position: relative;
    z-index: 1;
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(220px, 340px);
    gap: 1.5rem;
    align-items: center;
    padding: 1.4rem 0 2rem;
}

.hero-copy h1 {
    margin: 0.3rem 0 0.85rem;
    font-size: clamp(2.4rem, 6vw, 4.6rem);
    line-height: 0.95;
    letter-spacing: -0.05em;
}

.hero-copy p {
    margin: 0;
    max-width: 42rem;
    font-size: 1.06rem;
    line-height: 1.7;
    color: var(--text-soft);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.85rem;
    border: 1px solid rgba(79, 209, 181, 0.2);
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.42);
    color: #bff7ec;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-orbit {
    position: relative;
    aspect-ratio: 1;
    min-height: 220px;
    display: grid;
    place-items: center;
}

.orbit-core,
.orbit-glow {
    position: absolute;
    border-radius: 999px;
}

.orbit-core {
    width: 130px;
    height: 130px;
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.92), rgba(79, 209, 181, 0.24) 35%, rgba(20, 184, 166, 0.12) 65%, transparent 100%),
        rgba(15, 23, 42, 0.84);
    box-shadow:
        0 0 0 1px rgba(79, 209, 181, 0.12),
        0 0 50px rgba(79, 209, 181, 0.24);
}

.orbit-core::before,
.orbit-core::after {
    content: "";
    position: absolute;
    inset: -2rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.1);
}

.orbit-core::after {
    inset: -4.2rem;
}

.orbit-glow-primary {
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(79, 209, 181, 0.22), transparent 70%);
}

.orbit-glow-secondary {
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.12), transparent 72%);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
    gap: 1.4rem;
}

.card {
    position: relative;
    overflow: hidden;
    padding: 1.5rem;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(180deg, rgba(15, 23, 42, 0.36), rgba(2, 6, 23, 0.08)),
        var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent 36%);
    pointer-events: none;
}

.card-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.card-header-wrap {
    flex-wrap: wrap;
}

.card-kicker {
    margin: 0 0 0.3rem;
    color: #94f4e2;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.card h2 {
    margin: 0;
    font-size: 1.45rem;
    letter-spacing: -0.02em;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.15);
    background: rgba(15, 23, 42, 0.54);
    color: var(--text-soft);
    font-size: 0.92rem;
    font-weight: 600;
}

.frequency-value {
    margin-top: 2rem;
    font-size: clamp(3.7rem, 8vw, 5.6rem);
    font-weight: 700;
    letter-spacing: -0.07em;
    line-height: 0.95;
}

.frequency-unit {
    margin-top: 0.35rem;
    color: var(--text-muted);
    font-size: 1rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
    margin: 1.8rem 0 1rem;
}

.metric-card {
    padding: 1rem;
    border: 1px solid rgba(148, 163, 184, 0.14);
    border-radius: var(--radius-md);
    background: rgba(15, 23, 42, 0.4);
}

.metric-card dt {
    margin: 0 0 0.4rem;
    color: var(--text-muted);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.metric-card dd {
    margin: 0;
    font-size: 1rem;
    line-height: 1.55;
}

.card-message,
.chart-meta,
.range-button {
    position: relative;
    z-index: 1;
}

.card-message {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.current-card.is-loading .frequency-value,
.current-card.is-loading .frequency-unit {
    opacity: 0.9;
}

.status-normal .frequency-value,
.status-normal .status-pill {
    color: #adf5d9;
}

.status-warning .frequency-value,
.status-warning .status-pill {
    color: #ffe5a8;
}

.status-critical .frequency-value,
.status-critical .status-pill {
    color: #ffc0cb;
}

.status-error .frequency-value,
.status-error .status-pill {
    color: #d7e1f0;
}

.status-normal {
    border-color: rgba(79, 209, 181, 0.34);
}

.status-warning {
    border-color: rgba(246, 196, 83, 0.34);
}

.status-critical {
    border-color: rgba(251, 113, 133, 0.34);
}

.chart-card {
    min-height: 34rem;
}

.range-selector {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.range-button {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.55);
    color: var(--text-soft);
    font: inherit;
    font-size: 0.95rem;
    cursor: pointer;
    transition:
        transform 160ms ease,
        border-color 160ms ease,
        background 160ms ease,
        color 160ms ease;
}

.range-button:hover:not(:disabled),
.range-button:focus-visible:not(:disabled) {
    transform: translateY(-1px);
    border-color: rgba(79, 209, 181, 0.4);
    color: var(--text);
}

.range-button:focus-visible {
    outline: 2px solid rgba(79, 209, 181, 0.35);
    outline-offset: 2px;
}

.range-button.is-active {
    border-color: rgba(79, 209, 181, 0.52);
    background: rgba(20, 184, 166, 0.18);
    color: #dffdf7;
}

.range-button:disabled {
    cursor: wait;
    opacity: 0.8;
}

.chart-meta {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    margin-top: 1.15rem;
    color: var(--text-soft);
    font-size: 0.95rem;
}

.chart-frame {
    position: relative;
    margin-top: 1.2rem;
    height: 27rem;
    padding: 1rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.12);
    background:
        linear-gradient(180deg, rgba(15, 23, 42, 0.52), rgba(2, 6, 23, 0.18)),
        var(--panel-strong);
}

#historyChart {
    width: 100%;
    height: 100%;
}

@media (max-width: 960px) {
    .hero,
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 1rem;
    }

    .hero-orbit {
        order: -1;
        min-height: 180px;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 1rem, 100%);
        padding-bottom: 1.5rem;
    }

    .card {
        padding: 1.15rem;
        border-radius: 24px;
    }

    .card-header,
    .chart-meta {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .chart-card {
        min-height: 30rem;
    }

    .chart-frame {
        height: 22rem;
        padding: 0.75rem;
    }

    .range-selector {
        width: 100%;
    }

    .range-button {
        flex: 1 1 calc(50% - 0.55rem);
        justify-content: center;
    }
}