:root {
    --page-background: #151719;
    --panel-background: #23272b;
    --panel-border: #4a5056;
    --text-primary: #f2f2f2;
    --text-muted: #aeb4ba;
    --control-background: #30353a;
    --control-hover: #3c4349;
    --control-active: #d4a84f;
    --control-active-text: #17191b;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--page-background);
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--page-background);
    color: var(--text-primary);
    font-family: "Geologica", sans-serif;
}

button {
    font: inherit;
}

.game-page {
    width: min(100% - 32px, 760px);
    margin: 0 auto;
    padding: 36px 0 28px;
}

.game-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.site-return {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
    min-height: 38px;
    padding: 8px 11px;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    background: var(--control-background);
    color: var(--text-primary);
    font-size: 0.8125rem;
    font-weight: 550;
    text-decoration: none;
}

.site-return:hover {
    background: var(--control-hover);
}

.site-return:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.game-title {
    margin: 0;
    font-size: 2rem;
    font-weight: 650;
    line-height: 1.1;
}

.game-subtitle {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.game-stage {
    overflow: hidden;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    background: var(--panel-background);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
}

#bird-hunting-canvas {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    outline: none;
    touch-action: none;
}

#bird-hunting-canvas:focus-visible {
    box-shadow: inset 0 0 0 3px var(--control-active);
}

.game-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px;
    border-top: 1px solid var(--panel-border);
}

.weapon-selector {
    display: inline-flex;
    min-width: 0;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
}

.control-button {
    min-height: 42px;
    border: 0;
    background: var(--control-background);
    color: var(--text-primary);
    cursor: pointer;
}

.weapon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 124px;
    padding: 9px 14px;
}

.weapon-button + .weapon-button {
    border-left: 1px solid var(--panel-border);
}

.control-button:hover {
    background: var(--control-hover);
}

.control-button:focus-visible {
    position: relative;
    z-index: 1;
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.weapon-button.is-active {
    background: var(--control-active);
    color: var(--control-active-text);
}

.reload-button {
    display: inline-grid;
    width: 42px;
    min-width: 42px;
    place-items: center;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
}

.game-note {
    margin: 15px 0 0;
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.game-note.is-error {
    color: #ef8f87;
}

@media (max-width: 520px) {
    .game-page {
        width: min(100% - 20px, 760px);
        padding-top: 20px;
    }

    .game-title {
        font-size: 1.5rem;
    }

    .game-header {
        align-items: stretch;
        flex-direction: column;
    }

    .site-return {
        align-self: flex-start;
    }

    .weapon-selector {
        display: grid;
        flex: 1;
        grid-template-columns: 1fr 1fr;
    }

    .weapon-button {
        min-width: 0;
        padding-inline: 10px;
    }
}