/* 기본 스타일 */
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #1a1a1a;
    color: #fff;
    overflow: hidden; /* 스크롤바 제거 */
}

canvas {
    display: block;
}

/* 오버레이 공통 스타일 (메뉴, 게임오버 등) */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: none; /* 기본적으로 숨김 */
    justify-content: center;
    align-items: center;
    text-align: center;
    z-index: 10;
}

.overlay.active {
    display: flex; /* 활성화 시 보임 */
}

.menu-container {
    background-color: rgba(40, 40, 40, 0.9);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

.menu-container h1 {
    margin-top: 0;
    font-size: 2.5em;
    color: #00ffff;
}

.menu-button {
    display: block;
    width: 100%;
    padding: 15px;
    margin: 15px 0;
    font-size: 1.2em;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
}

.menu-button:hover {
    background-color: #0056b3;
}

.menu-button:active {
    transform: scale(0.98);
}

#settings-icon {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2em;
    cursor: pointer;
}

/* 로딩 스피너 */
.spinner {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #3498db;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}


/* 게임 화면 및 HUD */
#game-screen {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: none; /* 초기에는 숨김 */
}

#gl-canvas {
    width: 100%;
    height: 100%;
}

#hud {
    position: absolute;
    top: 10px;
    left: 10px;
    color: white;
    text-shadow: 1px 1px 2px black;
    z-index: 5;
}

#hud > div {
    margin-bottom: 10px;
}

#stamina-container {
    display: flex;
    align-items: center;
}

#stamina-bar {
    width: 100px;
    height: 15px;
    background-color: #555;
    border: 1px solid #fff;
    margin-left: 10px;
    border-radius: 3px;
    background-image: linear-gradient(to right, #00ff00, #ffff00, #ff0000);
    background-size: 100% 100%;
}

/* 미니맵 */
#map-canvas {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 200px;
    height: 200px;
    background-color: rgba(0, 0, 0, 0.5);
    border: 1px solid #fff;
    z-index: 5;
}

/* 모바일 컨트롤 */
#mobile-controls {
    position: absolute;
    bottom: 20px;
    left: 20px;
    width: calc(100% - 40px);
    display: none; /* PC에서는 숨김 */
    justify-content: space-between;
    align-items: flex-end;
    z-index: 5;
    pointer-events: none; /* 자식 요소만 이벤트 받도록 */
}

#joystick-container {
    width: 120px;
    height: 120px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    position: relative;
    pointer-events: all;
}

#joystick {
    width: 60px;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    position: absolute;
    top: 30px;
    left: 30px;
}

#run-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(255, 82, 82, 0.5);
    color: white;
    font-size: 1.5em;
    border: 2px solid rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: all;
}

/* 미디어 쿼리 - PC 환경에서는 모바일 컨트롤 숨김 */
@media (min-width: 768px) {
    #mobile-controls {
        display: none !important;
    }
}

/* 미디어 쿼리 - 모바일 환경 설정 */
@media (max-width: 767px) {
    #mobile-controls {
        display: flex;
    }
    #map-canvas {
        width: 120px;
        height: 120px;
    }
    .menu-container h1 {
        font-size: 2em;
    }
}