:root {
    --bg: #07111f;
    --bg-secondary: #0b1729;
    --bg-radial: rgba(56, 189, 248, 0.18);
    --text: #f8fafc;
    --text-soft: #cbd5e1;
    --text-dim: #8ba0ba;
    --card: rgba(12, 20, 35, 0.7);
    --card-strong: rgba(15, 23, 42, 0.86);
    --card-border: rgba(148, 163, 184, 0.14);
    --accent: #67e8f9;
    --accent-strong: #60a5fa;
    --accent-secondary: #fb7185;
    --accent-glow: rgba(96, 165, 250, 0.22);
    --success-bg: rgba(34, 197, 94, 0.15);
    --success-text: #4ade80;
    --danger-bg: rgba(239, 68, 68, 0.14);
    --danger-text: #f87171;
    --shadow: 0 24px 60px rgba(2, 6, 23, 0.38);
    --button-text: #02111f;
    --chart-text: #d7e3f2;
    --chart-grid: rgba(148, 163, 184, 0.12);
    --rpm-line: #60a5fa;
    --rpm-point-border: #dbeafe;
    --suhu-line: #fb7185;
    --suhu-point-border: #ffe4ea;
    --arus-line: #22c55e;
    --arus-point-border: #dcfce7;
    --tooltip-bg: rgba(8, 15, 28, 0.9);
    --tooltip-border: rgba(148, 163, 184, 0.18);
}

body.light {
    --bg: #eef4fb;
    --bg-secondary: #dce8f7;
    --bg-radial: rgba(14, 165, 233, 0.16);
    --text: #0f172a;
    --text-soft: #334155;
    --text-dim: #64748b;
    --card: rgba(255, 255, 255, 0.78);
    --card-strong: rgba(255, 255, 255, 0.88);
    --card-border: rgba(148, 163, 184, 0.28);
    --accent: #0284c7;
    --accent-strong: #2563eb;
    --accent-secondary: #e11d48;
    --accent-glow: rgba(37, 99, 235, 0.12);
    --success-bg: rgba(34, 197, 94, 0.14);
    --success-text: #16a34a;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-text: #dc2626;
    --shadow: 0 24px 50px rgba(148, 163, 184, 0.18);
    --button-text: #eff6ff;
    --chart-text: #334155;
    --chart-grid: rgba(100, 116, 139, 0.16);
    --rpm-line: #2563eb;
    --rpm-point-border: #dbeafe;
    --suhu-line: #e11d48;
    --suhu-point-border: #ffe4ea;
    --arus-line: #16a34a;
    --arus-point-border: #dcfce7;
    --tooltip-bg: rgba(255, 255, 255, 0.96);
    --tooltip-border: rgba(148, 163, 184, 0.28);
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: dark;
}

body.light {
    color-scheme: light;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Manrope", Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top center, var(--bg-radial), transparent 28%),
        linear-gradient(160deg, var(--bg), var(--bg-secondary));
    transition: background 0.35s ease, color 0.35s ease;
    position: relative;
    overflow-x: hidden;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    width: 320px;
    height: 320px;
    border-radius: 999px;
    filter: blur(70px);
    pointer-events: none;
    opacity: 0.5;
    z-index: 0;
}

body::before {
    top: -120px;
    left: -80px;
    background: rgba(56, 189, 248, 0.16);
}

body::after {
    right: -100px;
    bottom: 40px;
    background: rgba(251, 113, 133, 0.12);
}

.page-shell {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.045) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 85%);
    pointer-events: none;
    z-index: 0;
}

.wrapper {
    position: relative;
    z-index: 1;
    width: 100%;
    margin: 0 auto;
    padding: clamp(14px, 2.8vw, 32px);
}

.hero,
.card,
.chart-card {
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.hero {
    width: 100%;
    padding: clamp(18px, 2.8vw, 28px);
    border-radius: 30px;
    border: 1px solid var(--card-border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01)),
        var(--card);
    box-shadow: var(--shadow);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(15, 23, 42, 0.18);
    border: 1px solid rgba(103, 232, 249, 0.24);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

body.light .hero-kicker {
    background: rgba(255, 255, 255, 0.62);
}

.hero-kicker::before {
    content: "";
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    box-shadow: 0 0 16px var(--accent);
}

.theme-toggle,
.action-button {
    border: 0;
    cursor: pointer;
    font: inherit;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 11px 16px;
    border-radius: 16px;
    color: var(--text);
    background: var(--card-strong);
    border: 1px solid var(--card-border);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.theme-toggle:hover,
.action-button:hover {
    transform: translateY(-1px);
}

.theme-toggle:hover {
    box-shadow: 0 16px 35px var(--accent-glow);
}

.theme-toggle__icon {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent-strong), var(--accent));
    color: white;
    font-size: 14px;
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.28);
}

.theme-toggle__label {
    font-size: 14px;
    font-weight: 700;
}

.hero-title {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 18px;
    margin: 26px 0 4px;
    text-align: left;
}

.hero-copy {
    min-width: 0;
}

.hero-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 78px;
    height: 78px;
    border-radius: 24px;
    background:
        linear-gradient(145deg, rgba(96, 165, 250, 0.28), rgba(103, 232, 249, 0.12));
    border: 1px solid rgba(125, 211, 252, 0.28);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 18px 36px rgba(56, 189, 248, 0.16);
    font-size: 34px;
    transform: rotate(-8deg);
}

.hero-copy h1 {
    margin: 0;
    font-size: clamp(2.25rem, 6vw, 4rem);
    line-height: 0.95;
    letter-spacing: 0.08em;
    font-weight: 800;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #dbeafe 42%, #67e8f9 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 14px 34px rgba(96, 165, 250, 0.16);
}

body.light .hero-copy h1 {
    background: linear-gradient(135deg, #0f172a 0%, #1d4ed8 42%, #0284c7 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.title-accent {
    width: min(220px, 70%);
    height: 4px;
    margin-top: 10px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(103, 232, 249, 0), rgba(103, 232, 249, 0.95), rgba(251, 113, 133, 0.95), rgba(251, 113, 133, 0));
    box-shadow: 0 0 22px rgba(56, 189, 248, 0.28);
}

.status-row,
.action-row {
    display: flex;
    justify-content: center;
}

.status-row {
    margin-top: 22px;
}

.status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 10px 16px;
    border-radius: 999px;
    color: var(--text-soft);
    background: var(--card);
    border: 1px solid var(--card-border);
    transition: transform 0.24s ease, box-shadow 0.24s ease, background 0.24s ease, color 0.24s ease;
}

.status::before {
    content: "";
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: currentColor;
    box-shadow: 0 0 12px currentColor;
}

.status.online {
    background: var(--success-bg);
    color: var(--success-text);
}

.status.offline {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: 22px;
    margin-top: 22px;
}

.card {
    position: relative;
    overflow: hidden;
    padding: 24px 24px 26px;
    border-radius: 24px;
    border: 1px solid var(--card-border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015)),
        var(--card-strong);
    box-shadow: var(--shadow);
    text-align: left;
    transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.card::before {
    content: "";
    position: absolute;
    inset: -40% auto auto -20%;
    width: 180px;
    height: 180px;
    border-radius: 999px;
    filter: blur(12px);
    opacity: 0.18;
}

.card.rpm::before {
    background: rgba(96, 165, 250, 0.26);
}

.card.suhu::before {
    background: rgba(251, 113, 133, 0.24);
}

.card.arus {
    border-color: rgba(34, 197, 94, 0.22);
}

.card.arus::before {
    background: rgba(34, 197, 94, 0.22);
}

.card-label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.card h2 {
    margin: 10px 0 0;
    font-size: 1.5rem;
}

.value {
    margin-top: 20px;
    font-size: clamp(2.5rem, 6vw, 3.85rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    transition: transform 0.22s ease, text-shadow 0.22s ease, color 0.22s ease, opacity 0.22s ease;
    opacity: 0.92;
}

.value.loaded {
    opacity: 1;
}

.value-rpm {
    color: var(--rpm-line);
    text-shadow: 0 0 24px rgba(96, 165, 250, 0.16);
}

.value-suhu {
    color: var(--suhu-line);
    text-shadow: 0 0 24px rgba(251, 113, 133, 0.14);
}

.value-arus {
    color: var(--arus-line);
    text-shadow: 0 0 24px rgba(34, 197, 94, 0.14);
}

.updated {
    margin-top: 18px;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.95rem;
}

.action-row {
    margin-top: 24px;
}

.action-button {
    padding: 14px 22px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--accent-strong), var(--accent));
    color: var(--button-text);
    font-weight: 800;
    letter-spacing: 0.02em;
    box-shadow: 0 18px 30px rgba(56, 189, 248, 0.18);
    transition: transform 0.22s ease, box-shadow 0.22s ease, filter 0.22s ease;
}

.action-button:hover {
    box-shadow: 0 22px 36px rgba(56, 189, 248, 0.28);
    filter: saturate(1.05);
}

.action-button:active,
.theme-toggle:active {
    transform: scale(0.98);
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: stretch;
    margin-top: 30px;
}

.chart-card {
    display: flex;
    flex-direction: column;
    width: 100%;
    border-radius: 24px;
    border: 1px solid var(--card-border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015)),
        var(--card-strong);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.chart-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    background: radial-gradient(circle at top, rgba(255, 255, 255, 0.08), transparent 55%);
}

.chart-card--small {
    min-height: clamp(280px, 30vw, 320px);
    max-height: 340px;
    padding: 16px 16px 14px;
}

.rpm-chart {
    --chart-accent: rgba(96, 165, 250, 0.28);
}

.suhu-chart {
    --chart-accent: rgba(251, 113, 133, 0.24);
}

.arus-chart {
    --chart-accent: rgba(34, 197, 94, 0.24);
}

.chart-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.chart-kicker {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}

.chart-title {
    margin: 6px 0 0;
    font-size: clamp(1rem, 1.4vw, 1.2rem);
    line-height: 1.15;
}

.chart-wrap {
    position: relative;
    width: 100%;
    flex: 1;
    min-height: 0;
}

.chart-wrap--small {
    height: 100%;
    max-height: 248px;
}

.pop {
    animation-duration: 0.42s;
    animation-timing-function: ease;
}

.status.pop {
    animation-name: softPop;
}

.card.pop {
    animation-name: cardPop;
}

.value.flash {
    animation: valueGlow 0.45s ease;
}

.chart-card.chart-update {
    animation: chartUpdateFlash 0.95s ease;
}

.chart-card.chart-update::after {
    opacity: 1;
}

.card.rpm.pop {
    border-color: rgba(96, 165, 250, 0.36);
    box-shadow: 0 22px 42px rgba(96, 165, 250, 0.14);
}

.card.suhu.pop {
    border-color: rgba(251, 113, 133, 0.34);
    box-shadow: 0 22px 42px rgba(251, 113, 133, 0.12);
}

.card.arus.pop {
    border-color: rgba(34, 197, 94, 0.34);
    box-shadow: 0 22px 42px rgba(34, 197, 94, 0.12);
}

@keyframes cardPop {
    0% {
        transform: scale(1);
    }
    45% {
        transform: scale(1.02) translateY(-3px);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes softPop {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes valueGlow {
    0% {
        transform: scale(1);
        text-shadow: none;
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes chartUpdateFlash {
    0% {
        transform: scale(1);
        box-shadow: var(--shadow);
    }
    38% {
        transform: translateY(-2px) scale(1.01);
        box-shadow:
            0 0 0 1px var(--chart-accent),
            0 0 24px var(--chart-accent),
            0 0 42px var(--chart-accent),
            var(--shadow);
    }
    100% {
        transform: scale(1);
        box-shadow: var(--shadow);
    }
}

@media (max-width: 980px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }

    .chart-card--small {
        min-height: 300px;
        max-height: none;
    }

    .chart-wrap--small {
        max-height: 236px;
    }
}

@media (max-width: 820px) {
    .wrapper {
        padding: 14px;
    }

    .topbar,
    .hero-title {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .hero-copy {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .card {
        text-align: center;
    }

    .title-accent {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 560px) {
    .hero,
    .chart-card,
    .card {
        padding-left: 18px;
        padding-right: 18px;
    }

    .hero {
        border-radius: 24px;
    }

    .theme-toggle {
        width: 100%;
        justify-content: center;
    }

    .chart-card--small {
        min-height: 280px;
        max-height: none;
    }

    .chart-wrap--small {
        max-height: 210px;
    }
}