:root {
    --glass-bg: rgba(10, 10, 10, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glow-color: #00a2fa;
}

/* Global reset */
* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;  
    height: 100vh;
    background: #000;
    color: #fff;
    overflow: hidden;
    font-family: "Inter", system-ui, sans-serif;
}

#app {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Glass body */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.thermostat-ui {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 28px;
}

/* Main body */
.thermostat {
    position: relative;
    width: 150px;
    height: 520px;
    border-radius: 999px;
    overflow: visible;
}

.thermostat-inner {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    overflow: visible;
}

.thermostat-inner::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.1);
    mix-blend-mode: soft-light;
    pointer-events: none;
}

/* Texture */
.glass-noise {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0.08;
    mix-blend-mode: overlay;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Track */
.track {
    position: absolute;
    top: 46px;
    bottom: 46px;
    left: 50%;
    transform: translateX(-50%);
    width: 42px;
    border-radius: 999px;
    background:
        radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.35) 0, transparent 55%),
        radial-gradient(circle at 50% 100%, rgba(0, 0, 0, 1) 0, rgba(0, 0, 0, 0.9) 70%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.8));
    background-blend-mode: screen, normal, soft-light;
    box-shadow: inset 0 0 18px rgba(0, 0, 0, 1), 0 0 18px rgba(0, 0, 0, 0.8);
    overflow: hidden;
}

/* Electric plasma fill */
.mercury {
    position: absolute;
    bottom: 0;
    left: -45%;
    width: 190%;
    height: 0%;
    background: var(--glow-color);
    filter: url(#turbulent-displace);
    mix-blend-mode: screen;
    box-shadow: 0 0 45px var(--glow-color), 0 0 90px var(--glow-color);
    transition: height 0.12s linear, box-shadow 0.3s ease, background 0.25s ease;
    opacity: 0.95;
}

/* Flowing current over plasma */
.mercury::before,
.mercury::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    filter: blur(6px);
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.3), transparent 90%);
    mix-blend-mode: color-dodge;
    opacity: 0.25;
    animation: pulseElectric 3s infinite ease-in-out alternate;
}

.mercury::after {
    filter: blur(16px);
    opacity: 0.18;
    animation-delay: 1.5s;
}

@keyframes pulseElectric {
    0% {
        opacity: 0.15;
        transform: scaleY(1);
    }

    100% {
        opacity: 0.35;
        transform: scaleY(1.05);
    }
}

/* Knob */
.knob-zone {
    position: absolute;
    top: 46px;
    bottom: 46px;
    left: 0;
    right: 0;
    pointer-events: none;
}

.knob {
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    border-radius: 999px;
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(12px) saturate(260%) brightness(1.25);
    -webkit-backdrop-filter: blur(12px) saturate(260%) brightness(1.25);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: inset 0 1px 18px rgba(255, 255, 255, 0.15), 0 8px 26px rgba(0, 0, 0, 0.9);
    cursor: grab;
    pointer-events: auto;
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.knob:active {
    transform: translate(-50%, -50%) scale(1.05);
}

/* Scale container and marks */
.scale-container {
    position: absolute;
    top: 46px;
    bottom: 46px;
    left: -90px;
    width: 80px;
    pointer-events: none;
}

.scale-mark {
    position: absolute;
    right: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.35);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transform-origin: right center;
    transition: all 0.1s ease;
}

.tick {
    height: 2px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 2px;
    flex-shrink: 0;
}

/* Temperature readout */
.temp-readout {
    text-align: center;
    min-width: 250px;
}

.temp-value {
    font-size: 5.2rem;
    font-weight: 700;
    text-shadow: 0 0 48px var(--glow-color);
    color: var(--glow-color);
}

.temp-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.34em;
    opacity: 0.7;
    margin-top: 10px;
}

.status-text {
    margin-top: 8px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--glow-color);
    opacity: 0.95;
}

/* More Prominent Snow Particles - full canvas */
.particles-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

/* Responsive tweak */
@media (max-width: 480px) {
    .thermostat {
        transform: scale(0.9);
    }
}

#app {
    z-index: 10;
    position: relative;
}

.thermostat-ui,
.thermostat {
    z-index: 10;
    position: relative;
}

.particles-container {
    z-index: 1;
}

/* snow stays behind */