/* ========================================
   设置菜单样式 - 设置面板、滑块、按钮
   ======================================== */

.settings-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 242, 255, 0.3);
    color: var(--primary-color);
    cursor: pointer;
    z-index: 1100;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    backdrop-filter: blur(5px);
}

.settings-btn:hover {
    background: rgba(0, 242, 255, 0.1);
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 242, 255, 0.3);
}

.gear-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.5s ease;
}

.settings-btn:hover .gear-icon {
    transform: rotate(90deg);
}

.settings-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1101;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.settings-menu {
    position: relative;
    width: 450px;
    max-width: 90vw;
    background: linear-gradient(135deg, rgba(20, 24, 30, 0.95) 0%, rgba(30, 35, 45, 0.98) 100%);
    z-index: 1102;
    border: 2px solid rgba(0, 242, 255, 0.3);
    border-radius: 12px;
    box-shadow:
        0 0 40px rgba(0, 242, 255, 0.2),
        0 20px 60px rgba(0, 0, 0, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transform: scale(0.9) translateY(-20px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.settings-menu.open {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.settings-header {
    padding: 20px 25px;
    background: linear-gradient(135deg, rgba(0, 242, 255, 0.08) 0%, rgba(0, 242, 255, 0.02) 100%);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 242, 255, 0.2);
    border-radius: 10px 10px 0 0;
}

.settings-header h3 {
    margin: 0;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.5);
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    width: 32px;
    height: 32px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-btn:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.8), 0 0 20px rgba(0, 242, 255, 0.4);
}

.settings-content {
    padding: 25px;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 25px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.setting-item select {
    width: 100%;
    padding: 12px 15px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 242, 255, 0.3);
    color: white;
    border-radius: 8px;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.setting-item select:hover {
    border-color: var(--primary-color);
    background: rgba(0, 242, 255, 0.05);
}

.setting-item select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 242, 255, 0.3);
}

.setting-item .toggle-btn {
    width: 100%;
    padding: 12px 20px;
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(135deg, rgba(0, 242, 255, 0.2), rgba(0, 242, 255, 0.1));
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.setting-item .toggle-btn:hover {
    background: var(--primary-color);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.4);
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.setting-item input[type="range"] {
    flex: 1;
    height: 6px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    border: 1px solid rgba(0, 242, 255, 0.2);
}

.setting-item input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 0 8px rgba(0, 242, 255, 0.6);
}

.setting-item input[type="range"]::-webkit-slider-thumb:hover {
    background: #00e5ff;
    transform: scale(1.2);
    box-shadow: 0 0 12px rgba(0, 242, 255, 0.8);
}

.setting-item input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    box-shadow: 0 0 8px rgba(0, 242, 255, 0.6);
}

.setting-item input[type="range"]::-moz-range-thumb:hover {
    background: #00e5ff;
    transform: scale(1.2);
    box-shadow: 0 0 12px rgba(0, 242, 255, 0.8);
}

#volume-value,
#sfx-volume-value,
#bgm-volume-value {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary-color);
    font-weight: 700;
    min-width: 50px;
    text-align: right;
    font-size: 0.9rem;
}

.settings-footer {
    padding: 20px 25px;
    border-top: 1px solid rgba(0, 242, 255, 0.2);
}

.settings-return-btn {
    width: 100%;
    padding: 12px 20px;
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(135deg, rgba(255, 46, 77, 0.2), rgba(255, 46, 77, 0.1));
    border: 1px solid rgba(255, 46, 77, 0.5);
    color: #ff2e4d;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.settings-return-btn:hover {
    background: linear-gradient(135deg, rgba(255, 46, 77, 0.3), rgba(255, 46, 77, 0.2));
    border-color: #ff2e4d;
    box-shadow: 0 0 20px rgba(255, 46, 77, 0.4);
}