/* 基础重置和变量 */
:root {
    --primary-color: #ff6b35;
    --secondary-color: #f7c948;
    --accent-color: #00d4ff;
    --success-color: #00ff88;
    --danger-color: #ff4444;
    --bg-dark: rgba(20, 30, 40, 0.9);
    --bg-darker: rgba(10, 15, 20, 0.95);
    --text-glow: 0 0 10px var(--primary-color);
    --border-glow: 0 0 10px var(--accent-color), 0 0 20px rgba(0, 212, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background: linear-gradient(180deg, #1a2a3a 0%, #0d1520 100%);
    font-family: 'Courier New', 'Consolas', monospace;
    color: #fff;
}

/* 游戏画布 */
#game-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
}

/* 摄像头容器 - 右下角 */
#camera-container {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 280px;
    height: 210px;
    z-index: 100;
    border-radius: 10px;
    overflow: hidden;
    background: #000;
    box-shadow: var(--border-glow);
}

#camera {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
    opacity: 0.5;
}

#camera.hidden {
    display: none;
}

#hand-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* 摄像头边框装饰 */
.camera-frame {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.frame-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: var(--accent-color);
    border-style: solid;
}

.frame-corner.tl { top: 5px; left: 5px; border-width: 2px 0 0 2px; }
.frame-corner.tr { top: 5px; right: 5px; border-width: 2px 2px 0 0; }
.frame-corner.bl { bottom: 5px; left: 5px; border-width: 0 0 2px 2px; }
.frame-corner.br { bottom: 5px; right: 5px; border-width: 0 2px 2px 0; }

.camera-label {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-color);
    background: rgba(0, 0, 0, 0.5);
    padding: 2px 10px;
    border-radius: 3px;
}

/* 游戏 HUD */
#game-hud {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 40px;
    z-index: 50;
    padding: 15px 40px;
    background: var(--bg-dark);
    border: 1px solid var(--primary-color);
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.hud-label {
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 4px;
}

.hud-bird-icon {
    width: 16px;
    height: auto;
    vertical-align: middle;
}

.hud-value {
    font-size: 28px;
    font-weight: bold;
    color: #fff;
    text-shadow: var(--text-glow);
}

/* 小鸟数量高亮 */
.hud-birds {
    background: rgba(255, 68, 68, 0.2);
    padding: 5px 15px;
    border-radius: 8px;
    border: 1px solid var(--danger-color);
}

.hud-birds-value {
    color: var(--danger-color) !important;
    font-size: 32px !important;
    animation: birdPulse 1s infinite;
}

@keyframes birdPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* 左下角大型小鸟显示 */
#birds-display {
    position: fixed;
    left: 20px;
    bottom: 250px;
    z-index: 50;
    padding: 15px 25px;
    background: linear-gradient(135deg, rgba(255, 68, 68, 0.3), rgba(255, 107, 53, 0.2));
    border: 2px solid var(--danger-color);
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 0 30px rgba(255, 68, 68, 0.4);
}

#birds-display .birds-icon {
    font-size: 40px;
    margin-bottom: 5px;
    animation: bounce 1s infinite;
}

#birds-display .birds-icon-img {
    width: 50px;
    height: auto;
}

#birds-display .birds-count {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 20px var(--danger-color), 0 0 40px rgba(255, 68, 68, 0.5);
}

#birds-display .birds-label {
    font-size: 12px;
    color: var(--secondary-color);
    letter-spacing: 2px;
    margin-top: 5px;
}

/* 手势状态显示 */
#gesture-status {
    position: fixed;
    left: 20px;
    bottom: 20px;
    width: 200px;
    z-index: 50;
    padding: 15px;
    background: var(--bg-dark);
    border: 1px solid var(--accent-color);
    border-radius: 10px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.status-icon {
    font-size: 24px;
    animation: pulse 1.5s infinite;
}

.status-text {
    font-size: 12px;
    color: var(--accent-color);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.95); }
}

/* 力量条 */
.power-bar {
    display: flex;
    align-items: center;
    gap: 10px;
}

.power-label {
    font-size: 10px;
    color: var(--secondary-color);
    width: 45px;
}

.power-track {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

.power-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--success-color), var(--secondary-color), var(--danger-color));
    border-radius: 4px;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--secondary-color);
}

.power-value {
    font-size: 12px;
    width: 35px;
    text-align: right;
    color: var(--secondary-color);
}

/* 游戏控制按钮 */
#game-controls {
    position: fixed;
    top: 20px;
    right: 320px;
    display: flex;
    flex-direction: row;
    gap: 10px;
    z-index: 60;
}

.game-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-dark);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
    font-size: 12px;
    letter-spacing: 2px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.game-btn:hover {
    background: rgba(255, 107, 53, 0.2);
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.5);
    transform: scale(1.05);
}

.game-btn.hidden {
    display: none;
}

.btn-icon {
    font-size: 14px;
}

/* 游戏提示 */
#game-tips {
    position: fixed;
    left: 20px;
    top: 80px;
    width: 220px;
    z-index: 40;
    padding: 20px;
    background: var(--bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.tip-title {
    font-size: 14px;
    letter-spacing: 3px;
    color: var(--secondary-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tip-content p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
    line-height: 1.5;
}

/* 游戏弹窗 */
#game-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
}

#game-modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-darker);
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    padding: 40px 60px;
    text-align: center;
    box-shadow: 0 0 50px rgba(255, 107, 53, 0.5);
}

.modal-title {
    font-size: 32px;
    letter-spacing: 5px;
    color: var(--secondary-color);
    margin-bottom: 20px;
    text-shadow: var(--text-glow);
}

.modal-score {
    font-size: 24px;
    color: #fff;
    margin-bottom: 20px;
}

.modal-stars {
    font-size: 40px;
}

.modal-stars .star {
    color: #333;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.modal-stars .star.active {
    color: var(--secondary-color);
    text-shadow: 0 0 20px var(--secondary-color);
}

/* 弹窗按钮 */
.modal-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.modal-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    background: var(--bg-dark);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
    font-size: 14px;
    letter-spacing: 2px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.modal-btn:hover {
    background: rgba(255, 107, 53, 0.2);
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.5);
    transform: scale(1.05);
}

.modal-btn.hidden {
    display: none;
}

/* 弹窗Space键提示 */
.modal-hint {
    margin-top: 20px;
    font-size: 12px;
    color: var(--accent-color);
    letter-spacing: 2px;
    opacity: 0.8;
    animation: hintPulse 1.5s infinite;
}

@keyframes hintPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 加载屏幕 */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-darker);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
}

.loading-bird {
    font-size: 80px;
    animation: bounce 1s infinite;
}

.loading-bird-img {
    width: 80px;
    height: auto;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.loading-text {
    font-size: 36px;
    letter-spacing: 8px;
    color: var(--primary-color);
    margin-top: 20px;
    text-shadow: var(--text-glow);
}

.loading-subtitle {
    font-size: 14px;
    letter-spacing: 5px;
    color: var(--accent-color);
    margin-top: 10px;
}

.loading-progress {
    width: 250px;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    margin: 30px auto 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--primary-color);
}

/* 响应式 - 平板 */
@media (max-width: 768px) {
    #camera-container {
        width: 200px;
        height: 150px;
        right: 10px;
        bottom: 10px;
    }
    
    #game-hud {
        gap: 20px;
        padding: 10px 20px;
    }
    
    .hud-value {
        font-size: 20px;
    }
    
    #game-tips {
        display: none;
    }
    
    #gesture-status {
        left: 10px;
        bottom: 170px;
        width: 180px;
    }
    
    #birds-display {
        left: 10px;
        bottom: 180px;
        padding: 10px 15px;
    }
    
    #birds-display .birds-icon-img {
        width: 35px;
    }
    
    #birds-display .birds-count {
        font-size: 36px;
    }
    
    #game-controls {
        right: 220px;
    }
}

/* 响应式 - 手机 */
@media (max-width: 480px) {
    #camera-container {
        width: 140px;
        height: 105px;
        right: 5px;
        bottom: 5px;
    }
    
    .camera-label {
        font-size: 8px;
        padding: 1px 6px;
    }
    
    #game-hud {
        gap: 10px;
        padding: 8px 15px;
        top: 10px;
    }
    
    .hud-label {
        font-size: 8px;
        letter-spacing: 1px;
    }
    
    .hud-value {
        font-size: 16px;
    }
    
    .hud-bird-icon {
        width: 12px;
    }
    
    .hud-birds {
        padding: 3px 8px;
    }
    
    .hud-birds-value {
        font-size: 20px !important;
    }
    
    #birds-display {
        left: 5px;
        bottom: 120px;
        padding: 8px 12px;
        border-radius: 10px;
    }
    
    #birds-display .birds-icon-img {
        width: 28px;
    }
    
    #birds-display .birds-count {
        font-size: 28px;
    }
    
    #birds-display .birds-label {
        font-size: 10px;
    }
    
    #gesture-status {
        left: 5px;
        bottom: 5px;
        width: 150px;
        padding: 10px;
    }
    
    .status-icon {
        font-size: 18px;
    }
    
    .status-text {
        font-size: 10px;
    }
    
    .power-label {
        font-size: 8px;
        width: 35px;
    }
    
    .power-value {
        font-size: 10px;
        width: 30px;
    }
    
    #game-controls {
        top: 10px;
        right: 150px;
        gap: 5px;
    }
    
    .game-btn {
        padding: 6px 10px;
        font-size: 10px;
    }
    
    .btn-icon {
        font-size: 12px;
    }
    
    .btn-text {
        display: none;
    }
    
    .modal-content {
        padding: 25px 30px;
        margin: 10px;
        border-radius: 15px;
    }
    
    .modal-title {
        font-size: 22px;
        letter-spacing: 3px;
    }
    
    .modal-score {
        font-size: 18px;
    }
    
    .modal-stars {
        font-size: 30px;
    }
    
    .modal-buttons {
        gap: 10px;
    }
    
    .modal-btn {
        padding: 10px 20px;
        font-size: 12px;
    }
    
    .loading-bird-img {
        width: 60px;
    }
    
    .loading-text {
        font-size: 24px;
        letter-spacing: 4px;
    }
    
    .loading-subtitle {
        font-size: 12px;
    }
    
    .loading-progress {
        width: 180px;
    }
}

/* 触控设备优化 */
@media (pointer: coarse) {
    .game-btn, .modal-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    #camera-container {
        touch-action: none;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    #game-hud {
        top: 5px;
        padding: 5px 15px;
    }
    
    .hud-value {
        font-size: 18px;
    }
    
    #birds-display {
        bottom: 60px;
        padding: 5px 10px;
    }
    
    #birds-display .birds-count {
        font-size: 24px;
    }
    
    #gesture-status {
        bottom: 5px;
        padding: 8px;
    }
    
    #camera-container {
        width: 160px;
        height: 120px;
    }
}