:root {
    --bg: #0f172a;
    --panel: #111827;
    --accent: #22d3ee;
    --text: #e2e8f0;
    --muted: #94a3b8;
}
* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family:
        "Manrope",
        system-ui,
        -apple-system,
        sans-serif;
    background:
        radial-gradient(
            circle at 25% 20%,
            rgba(56, 189, 248, 0.12),
            transparent 25%
        ),
        radial-gradient(
            circle at 80% 10%,
            rgba(167, 139, 250, 0.16),
            transparent 30%
        ),
        radial-gradient(
            circle at 40% 80%,
            rgba(52, 211, 153, 0.12),
            transparent 25%
        ),
        var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.shell {
    width: min(1100px, 100%);
    background: rgba(17, 24, 39, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    border-radius: 18px;
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(10px);
}
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
header h1 {
    font-size: 20px;
    margin: 0;
    letter-spacing: 0.5px;
}
header .meta {
    display: flex;
    gap: 14px;
    align-items: center;
    font-size: 13px;
    color: var(--muted);
}
header .pill {
    padding: 6px 10px;
    border-radius: 8px;
    background: rgba(34, 211, 238, 0.12);
    color: #67e8f9;
    border: 1px solid rgba(34, 211, 238, 0.35);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.6px;
    text-transform: uppercase;
}
.pause-btn {
    background: rgba(34, 211, 238, 0.14);
    color: #67e8f9;
    border: 1px solid rgba(34, 211, 238, 0.4);
    border-radius: 10px;
    padding: 8px 12px;
    font-weight: 700;
    cursor: pointer;
    width: 6rem;
    text-align: center;
    transition:
        transform 120ms ease,
        filter 120ms ease;
}
.pause-btn:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
}
.pause-btn:active {
    transform: translateY(0);
}
#scene-wrapper {
    position: relative;
    width: 100%;
    height: 680px;
    background: #0b1222;
    overflow: hidden;
}
#scene-wrapper .fps-counter {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 6px 10px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.35);
    color: #e2e8f0;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.4px;
    opacity: 0;
    transform: translateY(-6px);
    transition:
        opacity 160ms ease,
        transform 160ms ease;
    pointer-events: none;
    z-index: 5;
}
#scene-wrapper .fps-counter.visible {
    opacity: 1;
    transform: translateY(0);
}
#scene-wrapper::before,
#scene-wrapper::after {
    content: "";
    position: absolute;
    inset: -30% -10%;
    background:
        radial-gradient(
            circle at 30% 30%,
            var(--backdrop-color-a, rgba(56, 189, 248, 0.045)),
            transparent 50%
        ),
        radial-gradient(
            circle at 70% 60%,
            var(--backdrop-color-b, rgba(167, 139, 250, 0.04)),
            transparent 48%
        ),
        radial-gradient(
            circle at 50% 20%,
            var(--backdrop-color-c, rgba(52, 211, 153, 0.035)),
            transparent 45%
        );
    filter: blur(var(--backdrop-blur, 24px));
    opacity: var(--backdrop-opacity, 0.24);
    pointer-events: none;
    transform: scale(1.05);
    z-index: 0;
    animation: floatBackdrop var(--backdrop-speed, 28s) ease-in-out infinite
        alternate;
}
#scene-wrapper::after {
    inset: -35% -15%;
    background:
        radial-gradient(
            circle at 20% 60%,
            var(--backdrop-color-a, rgba(14, 165, 233, 0.032)),
            transparent 50%
        ),
        radial-gradient(
            circle at 80% 30%,
            var(--backdrop-color-b, rgba(244, 114, 182, 0.032)),
            transparent 50%
        );
    opacity: calc(var(--backdrop-opacity, 0.24) * 0.7);
    animation: floatBackdropAlt calc(var(--backdrop-speed, 28s) * 1.1)
        ease-in-out infinite alternate;
}
#scene-wrapper:not(.backdrop-enabled)::before,
#scene-wrapper:not(.backdrop-enabled)::after {
    display: none;
}
@keyframes floatBackdrop {
    0% {
        transform: translate3d(0, 0, 0) scale(1.04);
    }
    50% {
        transform: translate3d(-2%, -1%, 0) scale(1.07);
    }
    100% {
        transform: translate3d(2%, 1.5%, 0) scale(1.05);
    }
}
@keyframes floatBackdropAlt {
    0% {
        transform: translate3d(0, 0, 0) scale(1.03);
    }
    50% {
        transform: translate3d(1.5%, -2%, 0) scale(1.06);
    }
    100% {
        transform: translate3d(-1%, 2%, 0) scale(1.04);
    }
}
canvas {
    display: block;
    width: 100%;
    height: 100%;
}
.hud-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-top: 1px solid rgba(148, 163, 184, 0.08);
}
.hud-bar .card {
    background: rgba(255, 255, 255, 0.04);
    padding: 10px 12px;
    border: 1px solid rgba(148, 163, 184, 0.14);
    border-radius: 10px;
    font-size: 13px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 6px;
    min-height: 36px;
}
.hud-bar .card strong {
    color: var(--text);
    font-size: 13px;
}
.progress-card {
    flex: 1 1 200px;
    max-width: 280px;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}
.progress {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: visible;
    border: 1px solid rgba(148, 163, 184, 0.16);
    position: relative;
}
.progress.goal-near,
.progress.goal-complete {
    box-shadow:
        0 0 8px rgba(34, 211, 238, 0.2),
        0 0 12px rgba(167, 139, 250, 0.16);
}
.progress.goal-near {
    animation: goalAura 1100ms ease-in-out infinite;
}
.progress.goal-complete {
    animation: goalAura 920ms ease-in-out infinite;
    box-shadow:
        0 0 12px rgba(34, 211, 238, 0.28),
        0 0 18px rgba(167, 139, 250, 0.22);
}
.progress__bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(135deg, #22d3ee, #a78bfa);
    transition:
        width 150ms ease,
        transform 220ms ease,
        filter 220ms ease;
    position: relative;
    box-shadow: 0 0 0 rgba(34, 211, 238, 0);
    transform-origin: left center;
}
.progress__bar::after {
    content: "";
    position: absolute;
    inset: -6px -2px;
    border-radius: inherit;
    background: inherit;
    opacity: 0;
    filter: blur(10px);
    transform: scale(0.98);
    pointer-events: none;
    transition:
        opacity 180ms ease,
        transform 180ms ease;
}
.progress__bar.goal-gradient {
    background: linear-gradient(90deg, #22d3ee, #a78bfa);
    background-size: 180% 100%;
    animation: goalShimmer 2200ms ease-in-out infinite;
}
.progress__bar.goal-near {
    animation:
        goalPulse var(--goal-pulse-speed, 900ms) ease-in-out infinite,
        goalGlow 1400ms ease-in-out infinite;
    box-shadow:
        0 0 12px rgba(34, 211, 238, 0.4),
        0 0 18px rgba(167, 139, 250, 0.3);
    filter: saturate(1.1);
}
.progress__bar.goal-near::after {
    opacity: 0.45;
    transform: scale(1.03);
    animation: goalAura 900ms ease-in-out infinite;
}
.progress__bar.goal-complete {
    animation:
        goalPulse 820ms ease-in-out infinite,
        goalGlow 1000ms ease-in-out infinite,
        goalShimmer 1400ms linear infinite;
    box-shadow:
        0 0 18px rgba(34, 211, 238, 0.5),
        0 0 26px rgba(167, 139, 250, 0.4),
        0 0 36px rgba(14, 165, 233, 0.35);
    filter: saturate(1.2);
}
.progress__bar.goal-complete::after {
    opacity: 0.65;
    transform: scale(1.06);
    animation: goalAura 760ms ease-in-out infinite;
}
@keyframes goalPulse {
    0% {
        transform: scaleY(1);
        filter: brightness(1);
    }
    50% {
        transform: scaleY(1.2);
        filter: brightness(1.12);
    }
    100% {
        transform: scaleY(1);
        filter: brightness(1);
    }
}
@keyframes goalAura {
    0% {
        opacity: 0.2;
        transform: scale(1.02);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.12);
    }
    100% {
        opacity: 0.2;
        transform: scale(1.02);
    }
}
@keyframes goalGlow {
    0% {
        filter: drop-shadow(0 0 0 rgba(34, 211, 238, 0));
    }
    50% {
        filter: drop-shadow(
            0 0 14px rgba(34, 211, 238, var(--goal-glow-alpha, 0.55))
        );
    }
    100% {
        filter: drop-shadow(0 0 0 rgba(34, 211, 238, 0));
    }
}
@keyframes goalShimmer {
    0% {
        background-position: 0% 0;
    }
    50% {
        background-position: 80% 0;
    }
    100% {
        background-position: 0% 0;
    }
}
.selector {
    background: rgba(0, 0, 0, 0.25);
    color: var(--text);
    border: 1px solid rgba(148, 163, 184, 0.3);
    border-radius: 8px;
    padding: 6px 8px;
    font-size: 13px;
}
.legend {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.04);
    padding: 10px 12px;
    border: 1px solid rgba(148, 163, 184, 0.14);
    border-radius: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
    pointer-events: none;
}
.legend span {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: inline-block;
}
.floating-messages {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.clear-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: visible;
    z-index: 2;
}
.clear-effect {
    position: absolute;
    transform-origin: center;
    border: 2px solid rgba(11, 18, 34, 0.9);
    box-shadow:
        0 0 18px rgba(255, 255, 255, 0.22),
        0 10px 24px rgba(0, 0, 0, 0.28);
    filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.18));
    pointer-events: none;
    mix-blend-mode: screen;
}
.floating-message {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transform: translate(-50%, 0) scale(0.98);
    background: rgba(15, 23, 42, 0.76);
    color: #f8fafc;
    padding: 16px 22px;
    border-radius: 14px;
    border: 1px solid rgba(226, 232, 240, 0.16);
    font-weight: 800;
    font-size: 21px;
    letter-spacing: 0.4px;
    text-shadow:
        0 10px 30px rgba(0, 0, 0, 0.45),
        0 2px 6px rgba(0, 0, 0, 0.35);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition:
        opacity 220ms ease,
        transform 220ms ease;
    filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.2));
}
.floating-message.visible {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
}
.pause-overlay {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(148, 163, 184, 0.3);
    color: #e2e8f0;
    padding: 8px 14px;
    border-radius: 12px;
    font-weight: 800;
    letter-spacing: 0.5px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 160ms ease;
}
.pause-overlay.visible {
    opacity: 1;
}
.game-over {
    position: absolute;
    inset: 0;
    background: rgba(10, 13, 25, 0.72);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 200ms ease;
}
.game-over.visible {
    pointer-events: auto;
    opacity: 1;
}
.game-over__card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 14px;
    padding: 20px 24px;
    text-align: center;
    min-width: 240px;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.35);
}
.game-over__card .title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
}
.game-over__card .score-line {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 14px;
}
.game-over__card button {
    background: linear-gradient(135deg, #22d3ee, #0ea5e9);
    border: none;
    color: #0b1222;
    font-weight: 700;
    padding: 10px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 14px;
}
.game-over__card button:hover {
    filter: brightness(1.08);
}
.win-overlay .game-over__card {
    min-width: 260px;
}
.win-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}
.win-actions button:nth-child(2) {
    background: linear-gradient(135deg, #a855f7, #22d3ee);
}
.floating-score {
    position: absolute;
    color: #e0f2fe;
    font-weight: 800;
    font-size: 18px;
    pointer-events: none;
    text-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
    animation: floatUp 900ms ease-out forwards;
}
@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translate(-50%, 0);
    }
    60% {
        opacity: 0.9;
        transform: translate(-50%, -22px);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -38px);
    }
}
.instructions {
    padding: 14px 18px;
    font-size: 14px;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.03);
    border-top: 1px solid rgba(148, 163, 184, 0.08);
    line-height: 1.6;
}
@media (max-width: 800px) {
    #scene-wrapper {
        height: 520px;
    }
    header h1 {
        font-size: 18px;
    }
    #scene-wrapper::before,
    #scene-wrapper::after {
        filter: blur(18px);
        opacity: 0.6;
    }
}