@import url("https://fonts.googleapis.com/css2?family=ZCOOL+KuaiLe&family=Outfit:wght@400;600;700;800&display=swap");

:root {
    --panel-bg: rgba(22, 28, 28, 0.88);
    --panel-line: rgba(255, 255, 255, 0.12);
    --text-main: #f8fafc;
    --accent: #facc15;
    --success: #22c55e;
    --danger: #ef4444;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    background: linear-gradient(180deg, #0b1f27, #12363d 48%, #09252c);
    color: var(--text-main);
    font-family: "Outfit", "PingFang SC", sans-serif;
}

.input-video {
    display: none;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#game-container.is-shaking {
    animation: screen-shake 0.4s linear;
}

#scene-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#ui-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hud-top {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    padding: 18px 18px 0;
}

.panel {
    min-width: 108px;
    border: 1px solid var(--panel-line);
    border-radius: 18px;
    background: var(--panel-bg);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.28);
    padding: 10px 14px;
    text-align: center;
}

.panel h3 {
    margin: 0;
    font-size: 13px;
    color: #a7f3d0;
    letter-spacing: 0.04em;
}

.panel div {
    margin-top: 6px;
    font-size: 24px;
    font-weight: 800;
    color: var(--accent);
}

.panel-energy {
    min-width: 180px;
}

.energy-wrap {
    width: 100%;
    height: 10px;
    margin-top: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
}

.energy-fill {
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #facc15, #fb923c 58%, #ef4444);
    transition: width 0.12s ease;
}

.mode-indicator {
    position: absolute;
    top: 104px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 18px;
    border-radius: 999px;
    background: rgba(9, 16, 18, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 28px;
    font-weight: 800;
    white-space: nowrap;
    display: none;
}

.mode-indicator.is-pulsing {
    animation: pulse-banner 0.4s ease;
}

.target-arrow {
    position: absolute;
    top: 46%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 84px;
    color: rgba(254, 240, 138, 0.92);
    text-shadow: 0 0 24px rgba(0, 0, 0, 0.55);
    display: none;
}

.toast {
    position: absolute;
    top: 34%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: "ZCOOL KuaiLe", sans-serif;
    font-size: clamp(34px, 6vw, 76px);
    line-height: 1;
    text-shadow: 0 5px 0 rgba(0, 0, 0, 0.35), 0 10px 20px rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity 0.18s ease;
    white-space: nowrap;
}

.debug-bar {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    padding: 12px 16px 16px;
    background: rgba(0, 0, 0, 0.84);
    border-top: 3px solid rgba(167, 243, 208, 0.4);
    font-size: 17px;
}

.hl {
    color: #fde047;
    font-weight: 800;
}

.status-dot {
    display: inline-block;
    width: 15px;
    height: 15px;
    margin-right: 6px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.84);
    background: #6b7280;
    transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.status-dot.is-ok {
    transform: scale(1.2);
    background: #22c55e;
    box-shadow: 0 0 14px rgba(34, 197, 94, 0.88);
}

.status-dot.is-bad {
    background: #ef4444;
}

.start-screen {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(circle at top, rgba(250, 204, 21, 0.12), transparent 30%),
        linear-gradient(135deg, rgba(10, 40, 24, 0.96), rgba(3, 57, 67, 0.94));
}

.start-inner {
    width: min(780px, 100%);
    text-align: center;
}

.kicker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #bbf7d0;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.start-screen h1 {
    margin: 20px 0 10px;
    font-family: "ZCOOL KuaiLe", sans-serif;
    font-size: clamp(40px, 7vw, 72px);
    color: var(--accent);
    text-shadow: 4px 4px 0 rgba(0, 0, 0, 0.42);
}

.subtitle {
    margin: 0 0 24px;
    color: #d1fae5;
    font-size: 18px;
}

.instructions,
.detect-status {
    padding: 22px;
    border-radius: 22px;
    background: rgba(0, 0, 0, 0.34);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(14px);
}

.instructions {
    display: grid;
    gap: 12px;
    text-align: left;
    line-height: 1.8;
    color: #ecfccb;
}

.detect-status {
    display: none;
    margin-top: 18px;
}

.detect-title {
    font-size: 30px;
    color: var(--accent);
    margin-bottom: 14px;
    font-weight: 800;
}

.check-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 22px;
    margin: 10px 0;
}

.countdown {
    min-height: 70px;
    margin-top: 14px;
    font-size: 58px;
    font-weight: 900;
    color: var(--success);
}

.start-button {
    margin-top: 22px;
    padding: 16px 72px;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    font: inherit;
    font-size: clamp(20px, 3vw, 32px);
    font-weight: 800;
    color: #fff;
    background: linear-gradient(180deg, #fb923c, #ea580c);
    box-shadow: 0 10px 0 #9a3412;
    transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.start-button:active {
    transform: translateY(6px);
    box-shadow: 0 4px 0 #9a3412;
}

.start-button:disabled {
    cursor: wait;
    opacity: 0.72;
}

.loading-copy {
    margin-top: 16px;
    color: #bbf7d0;
    font-size: 15px;
}

.loading-copy.is-error {
    color: #fecaca;
}

@keyframes screen-shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    50% { transform: translateX(10px); }
    75% { transform: translateX(-8px); }
    100% { transform: translateX(0); }
}

@keyframes pulse-banner {
    0% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.06); }
    100% { transform: translateX(-50%) scale(1); }
}

@media (max-width: 768px) {
    .hud-top {
        padding-top: 14px;
    }

    .panel {
        min-width: 92px;
        padding: 10px 12px;
    }

    .panel div {
        font-size: 21px;
    }

    .mode-indicator {
        top: 94px;
        font-size: 18px;
    }

    .target-arrow {
        font-size: 68px;
    }

    .debug-bar {
        font-size: 15px;
        gap: 12px;
    }

    .instructions {
        font-size: 15px;
    }

    .check-item {
        font-size: 18px;
    }

    .countdown {
        font-size: 44px;
    }
}