body {
            margin: 0;
            overflow: hidden;
            background-color: #000;
            font-family: 'Segoe UI', sans-serif;
            color: white;
            user-select: none;
        }
        #ui-layer {
            position: absolute;
            top: 20px;
            left: 20px;
            pointer-events: none;
            display: none;
        }
        .stats {
            background: rgba(0, 0, 0, 0.7);
            padding: 15px;
            border-radius: 8px;
            border-left: 5px solid #00d4ff;
        }
        #score-display { font-size: 24px; font-weight: bold; color: #fdbb2d; }
        #speed-display { font-size: 18px; color: #00d4ff; margin-top: 5px; }
        #weapon-info { margin-top: 10px; color: #aaa; font-size: 14px; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
        .active-weapon { color: #00d4ff; font-weight: bold; text-decoration: underline; }
        
        #health-bar-container {
            width: 200px;
            height: 10px;
            background: #333;
            border-radius: 5px;
            margin-top: 8px;
        }
        #health-bar { width: 100%; height: 100%; background: #ff4757; transition: width 0.3s; }

        #reload-container {
            width: 200px;
            height: 4px;
            background: rgba(255, 255, 255, 0.1);
            margin-top: 5px;
            border-radius: 2px;
        }
        #reload-bar { width: 0%; height: 100%; background: #00d4ff; }

        /* 緊急修理アイコンのスタイル */
        .repair-icon-container {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(255,255,255,0.05);
            padding: 2px 8px;
            border-radius: 4px;
        }
        #repair-cross-svg {
            width: 20px;
            height: 20px;
            filter: drop-shadow(0 0 2px rgba(0,0,0,0.5));
        }
        #repair-fill {
            transition: height 0.1s linear;
        }

        #compass-container {
            position: absolute;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.6);
            padding: 5px 20px;
            border-radius: 20px;
            border: 1px solid #00d4ff;
            font-weight: bold;
            font-size: 18px;
            color: #00d4ff;
            display: none;
        }

        #minimap-container {
            position: absolute;
            bottom: 20px;
            right: 20px;
            width: 200px;
            height: 200px;
            background: rgba(0, 15, 30, 0.85);
            border: 2px solid #00d4ff;
            border-radius: 10px;
            overflow: hidden;
            display: none;
        }
        #minimap-canvas {
            width: 100%;
            height: 100%;
        }

        #warning-ui {
            position: absolute;
            top: 25%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: #ff4757;
            font-size: 32px;
            font-weight: bold;
            text-shadow: 0 0 10px red;
            display: none;
            text-align: center;
            background: rgba(0,0,0,0.4);
            padding: 10px 20px;
            border-radius: 10px;
        }

        #selection-screen {
            position: absolute;
            inset: 0;
            background: radial-gradient(circle, #1a2a6c, #b21f1f, #fdbb2d);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            z-index: 100;
        }
        .ship-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }
        .ship-card {
            background: rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 10px;
            cursor: pointer;
            border: 2px solid transparent;
            transition: 0.3s;
            text-align: center;
            width: 220px;
        }
        .ship-card:hover { background: rgba(255, 255, 255, 0.2); border-color: #00d4ff; }
        
        #crosshair {
            position: absolute;
            top: 40%;
            left: 50%;
            width: 30px;
            height: 30px;
            border: 2px solid rgba(0, 212, 255, 0.7);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            display: none;
        }
        #crosshair::before, #crosshair::after {
            content: '';
            position: absolute;
            background: rgba(0, 212, 255, 0.7);
        }
        #crosshair::before { left: 50%; top: -5px; width: 2px; height: 10px; transform: translateX(-50%); }
        #crosshair::after { top: 50%; left: -5px; width: 10px; height: 2px; transform: translateY(-50%); }

        #game-over {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(0, 0, 0, 0.9);
            padding: 40px;
            border-radius: 15px;
            text-align: center;
            display: none;
            border: 2px solid #ff4757;
            min-width: 360px;
            max-height: 80vh;
            overflow-y: auto;
            z-index: 200;
        }
        .result-item {
            display: flex;
            justify-content: space-between;
            margin: 8px 0;
            border-bottom: 1px solid #333;
            padding: 2px 0;
        }
        .result-sub {
            font-size: 12px;
            color: #aaa;
            padding-left: 20px;
            display: flex;
            justify-content: space-between;
        }
        button { background: #00d4ff; border: none; padding: 12px 30px; cursor: pointer; border-radius: 5px; font-weight: bold; margin-top: 20px; color: #000; }