* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 50% 38%, oklch(0.34 0.055 258), oklch(0.18 0.035 258) 62%, oklch(0.12 0.028 258));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    color: oklch(0.98 0.008 92);
    overflow: hidden;
}

.kill-leaderboard {
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 6;
    width: min(286px, calc(100vw - 32px));
    padding: 13px 12px 12px;
    border: 1px solid oklch(0.98 0.01 92 / 0.22);
    border-radius: 8px;
    background: oklch(0.14 0.035 258 / 0.9);
    box-shadow:
        0 18px 42px oklch(0.06 0.02 258 / 0.42),
        inset 0 0 0 1px oklch(0.98 0.01 92 / 0.06);
    pointer-events: none;
}

.leaderboard-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 0 4px;
    color: oklch(0.76 0.035 232);
    font-size: 13px;
    font-weight: 950;
}

.leaderboard-list {
    display: grid;
    gap: 5px;
}

.leader-row {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr) auto;
    align-items: center;
    min-height: 34px;
    padding: 4px 10px 4px 6px;
    border-radius: 7px;
    background: oklch(0.98 0.01 92 / 0.035);
    color: oklch(0.98 0.008 92);
}

.leader-row.is-player {
    background: oklch(0.72 0.18 151 / 0.13);
}

.leader-row.is-top {
    background: oklch(0.84 0.16 86 / 0.12);
}

.leader-row.is-dead {
    opacity: 0.48;
}

.leader-token {
    display: grid;
    place-items: center;
    width: 20px;
    height: 20px;
    border: 1.5px solid oklch(0.98 0.01 92 / 0.64);
    border-radius: 50%;
    color: oklch(0.09 0.025 258);
    font-size: 9px;
    font-weight: 950;
    line-height: 1;
}

.leader-row.is-player .leader-token {
    font-size: 7px;
}

.leader-main {
    min-width: 0;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.leader-name {
    min-width: 34px;
    font-size: 15px;
    font-weight: 950;
}

.leader-meta {
    overflow: hidden;
    color: oklch(0.86 0.018 92 / 0.64);
    font-size: 11px;
    font-weight: 850;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.leader-ko {
    min-width: 22px;
    color: oklch(0.98 0.008 92);
    font-size: 17px;
    font-weight: 950;
    text-align: right;
}

.leader-row.is-top .leader-ko {
    color: oklch(0.84 0.16 86);
}

.leader-row.is-player .leader-ko {
    color: oklch(0.72 0.18 151);
}

#game-container {
    position: relative;
    width: min(98vw, calc(98vh * 16 / 9));
    aspect-ratio: 16 / 9;
    box-shadow:
        0 24px 70px oklch(0.07 0.02 258 / 0.74),
        0 0 0 1px oklch(0.98 0.02 92 / 0.16);
    background: oklch(0.12 0.025 258);
    overflow: hidden;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    background-color: oklch(0.1 0.02 258);
    touch-action: none;
    cursor: crosshair;
}

#screen-flash {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: oklch(0.96 0.12 86);
    opacity: 0;
    mix-blend-mode: screen;
}

#game-container.shake {
    animation: screen-shake 160ms ease-out;
}

#screen-flash.flash {
    animation: flash-hit 180ms ease-out;
}

#ui-layer {
    position: absolute;
    inset: 18px 18px auto;
    pointer-events: none;
    text-align: center;
    text-shadow: 0 2px 12px oklch(0.08 0.02 258 / 0.85);
}

.hud-row {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 14px;
}

.hud-pill {
    min-width: 86px;
    padding: 7px 11px 8px;
    border: 1px solid oklch(0.98 0.01 92 / 0.22);
    background: oklch(0.18 0.035 258 / 0.76);
    box-shadow: inset 0 0 0 1px oklch(0.98 0.01 92 / 0.06);
}

.hud-score {
    border-color: oklch(0.86 0.16 88 / 0.5);
}

.hud-label {
    display: block;
    margin-bottom: 2px;
    color: oklch(0.82 0.035 92);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0;
}

.hud-pill span:last-child {
    display: block;
    font-size: 18px;
    font-weight: 900;
}

#status-text {
    min-height: 34px;
    font-size: 24px;
    font-weight: 900;
}

#action-btn,
.menu-panel button {
    border: 0;
    background: oklch(0.66 0.2 35);
    color: oklch(0.98 0.008 92);
    font-weight: 950;
    letter-spacing: 0;
    cursor: pointer;
    box-shadow:
        0 6px 0 oklch(0.43 0.14 35),
        0 16px 32px oklch(0.08 0.02 258 / 0.38);
    transition: transform 120ms ease-out, box-shadow 120ms ease-out, background 120ms ease-out;
}

#action-btn:hover,
.menu-panel button:hover {
    background: oklch(0.7 0.22 38);
    transform: translateY(-1px);
}

#action-btn:active,
.menu-panel button:active {
    transform: translateY(5px);
    box-shadow:
        0 1px 0 oklch(0.43 0.14 35),
        0 8px 20px oklch(0.08 0.02 258 / 0.34);
}

#action-btn:disabled {
    background: oklch(0.47 0.018 258);
    color: oklch(0.76 0.016 258);
    box-shadow: 0 3px 0 oklch(0.31 0.014 258);
    cursor: not-allowed;
}

#action-btn {
    position: absolute;
    right: 24px;
    bottom: 24px;
    min-width: 138px;
    padding: 16px 30px;
    border-radius: 8px;
    font-size: 24px;
    display: none;
}

#power-panel {
    position: absolute;
    left: 24px;
    bottom: 28px;
    width: min(330px, calc(100% - 210px));
    padding: 11px 13px 13px;
    border: 1px solid oklch(0.98 0.01 92 / 0.18);
    background: oklch(0.14 0.035 258 / 0.78);
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 160ms ease-out, transform 160ms ease-out;
}

#power-panel.visible {
    opacity: 1;
    transform: translateY(0);
}

.power-readout {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    color: oklch(0.94 0.014 92);
    font-size: 13px;
    font-weight: 900;
}

.power-track {
    height: 13px;
    padding: 2px;
    background: oklch(0.08 0.02 258 / 0.82);
    box-shadow: inset 0 0 0 1px oklch(0.98 0.01 92 / 0.08);
}

#power-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, oklch(0.72 0.18 151), oklch(0.82 0.16 86), oklch(0.68 0.21 35));
    transition: width 80ms linear;
}

.menu-screen {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at 50% 38%, oklch(0.25 0.06 258 / 0.5), oklch(0.08 0.028 258 / 0.92) 68%),
        linear-gradient(135deg, oklch(0.16 0.045 258 / 0.92), oklch(0.11 0.03 258 / 0.92));
    z-index: 3;
}

.menu-screen.hidden {
    display: none;
}

.menu-panel {
    width: min(430px, 100%);
    padding: 34px 30px 32px;
    border: 1px solid oklch(0.98 0.01 92 / 0.18);
    background: oklch(0.15 0.035 258 / 0.88);
    text-align: center;
    box-shadow: 0 22px 60px oklch(0.05 0.018 258 / 0.55);
}

.menu-kicker {
    margin: 0 0 8px;
    color: oklch(0.84 0.16 86);
    font-size: 13px;
    font-weight: 950;
    text-transform: uppercase;
}

.menu-panel h1,
.menu-panel h2 {
    margin: 0 0 18px;
    color: oklch(0.98 0.008 92);
    font-size: 42px;
    line-height: 1.05;
    font-weight: 950;
}

.menu-panel h2 {
    font-size: 34px;
}

.menu-panel p {
    margin: 0 0 20px;
    color: oklch(0.84 0.02 92);
    line-height: 1.55;
}

.menu-panel button {
    min-width: 180px;
    padding: 15px 26px;
    border-radius: 8px;
    font-size: 19px;
}

@keyframes screen-shake {
    0% {
        transform: translate3d(0, 0, 0);
    }

    25% {
        transform: translate3d(-8px, 5px, 0);
    }

    50% {
        transform: translate3d(7px, -4px, 0);
    }

    75% {
        transform: translate3d(-4px, 3px, 0);
    }

    100% {
        transform: translate3d(0, 0, 0);
    }
}

@keyframes flash-hit {
    0% {
        opacity: 0.42;
    }

    100% {
        opacity: 0;
    }
}

@media (max-width: 640px) {
    .kill-leaderboard {
        top: 8px;
        left: 8px;
        width: 230px;
        padding: 10px;
    }

    .leaderboard-head {
        margin-bottom: 7px;
        font-size: 11px;
    }

    .leader-row {
        min-height: 30px;
        grid-template-columns: 23px minmax(0, 1fr) auto;
        padding: 3px 8px 3px 5px;
    }

    .leader-name {
        font-size: 13px;
    }

    .leader-meta {
        font-size: 10px;
    }

    .leader-ko {
        font-size: 15px;
    }

    #game-container {
        width: min(100vw, calc(100vh * 16 / 9));
    }

    #ui-layer {
        inset: 10px 8px auto;
    }

    .hud-row {
        gap: 5px;
    }

    .hud-pill {
        min-width: 70px;
        padding: 6px 8px 7px;
    }

    .hud-pill span:last-child {
        font-size: 15px;
    }

    #status-text {
        font-size: 18px;
    }

    #power-panel {
        left: 12px;
        bottom: 18px;
        width: calc(100% - 132px);
    }

    #action-btn {
        right: 12px;
        bottom: 16px;
        min-width: 94px;
        padding: 14px 16px;
        font-size: 20px;
    }

    .menu-panel {
        padding: 28px 22px;
    }

    .menu-panel h1 {
        font-size: 34px;
    }
}