/* ===================================
   通用样式 + 风格切换器
   =================================== */

/* ===================================
   全局重置
   =================================== */

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

html {
    scroll-behavior: smooth;
}

/* ===================================
   风格切换器
   =================================== */

.style-switcher {
    position: fixed;
    top: var(--space-lg, 40px);
    right: var(--space-lg, 40px);
    z-index: 10000;
    display: flex;
    gap: var(--space-sm, 16px);
    padding: var(--space-sm, 16px);
    border-radius: 50px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

/* 恐怖风格 */
body.horror .style-switcher {
    position: fixed;
    top: 40px;
    right: 40px;
    background: rgba(139, 0, 0, 0.9);
    border: 2px solid #8b0000;
    box-shadow: 0 4px 30px rgba(139, 0, 0, 0.5), 0 0 20px rgba(0, 0, 0, 0.3);
}

body.horror .style-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

body.horror .style-btn:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

body.horror .style-btn:hover::before {
    opacity: 0.2;
}

body.horror .style-btn.active {
    border-color: currentColor;
    box-shadow: 0 0 20px currentColor, 0 4px 15px rgba(0, 0, 0, 0.5);
}

body.horror .style-btn.active::before {
    opacity: 0.3;
}

body.horror .style-btn[data-style="horror"] {
    color: #ff4444;
}

body.horror .style-btn[data-style="glitch"] {
    color: #00ff41;
}

body.horror .style-btn[data-style="minimal"] {
    color: #e0e0e0;
}

/* 故障风格（负片） */
body.glitch .style-switcher {
    position: fixed;
    top: 40px;
    right: 40px;
    background: rgba(0, 0, 0, 0.9);
    border: 2px solid #333333;
    box-shadow: 0 4px 30px rgba(0, 255, 255, 0.2), 0 0 20px rgba(0, 0, 0, 0.5);
}

body.glitch .style-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

body.glitch .style-btn:hover {
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.4);
}

body.glitch .style-btn:hover::before {
    opacity: 0.25;
}

body.glitch .style-btn.active {
    border-color: currentColor;
    box-shadow: 0 0 20px currentColor, 0 4px 15px rgba(0, 255, 255, 0.3);
}

body.glitch .style-btn.active::before {
    opacity: 0.35;
}

body.glitch .style-btn[data-style="horror"] {
    color: #ff4444;
}

body.glitch .style-btn[data-style="glitch"] {
    color: #00ffff;
}

body.glitch .style-btn[data-style="minimal"] {
    color: #e0e0e0;
}

/* 简约风格 */
body.minimal .style-switcher {
    position: fixed;
    top: 40px;
    right: 40px;
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid #e9ecef;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1), 0 2px 10px rgba(0, 0, 0, 0.05);
}

body.minimal .style-btn {
    background: rgba(0, 0, 0, 0.05);
    color: #212529;
}

body.minimal .style-btn:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

body.minimal .style-btn:hover::before {
    opacity: 0.2;
}

body.minimal .style-btn.active {
    border-color: currentColor;
    box-shadow: 0 0 15px currentColor, 0 4px 10px rgba(0, 0, 0, 0.1);
}

body.minimal .style-btn.active::before {
    opacity: 0.25;
}

body.minimal .style-btn[data-style="horror"] {
    color: #8b0000;
}

body.minimal .style-btn[data-style="glitch"] {
    color: #00ff41;
}

body.minimal .style-btn[data-style="minimal"] {
    color: #495057;
}

.style-btn {
    width: 50px;
    height: 50px;
    border: 2px solid transparent;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.style-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: currentColor;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 50%;
}

.style-btn:hover {
    transform: scale(1.1);
}

.style-btn.active {
    border-color: currentColor;
}

.style-btn.active::before {
    opacity: 0.25;
}

/* 工具提示 */
.style-btn {
    position: relative;
}

.style-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    background: var(--color-black, #0a0a0a);
    color: #ffffff;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.style-btn:hover::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .style-switcher {
        top: var(--space-md, 24px);
        right: var(--space-md, 24px);
        gap: var(--space-xs, 8px);
        padding: var(--space-xs, 8px);
    }

    .style-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .style-switcher {
        top: var(--space-sm, 16px);
        right: var(--space-sm, 16px);
        gap: 6px;
        padding: 6px;
    }

    .style-btn {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .style-btn::after {
        display: none;
    }
}

/* 风格切换过渡效果 */
body {
    transition: opacity 0.3s ease;
}

body.style-switching {
    opacity: 0;
}

/* ===================================
   螺旋背景（仅恐怖风格使用）
   =================================== */

.spiral-background {
    display: none;
}

/* 当 body 有 class="horror" 时显示螺旋背景 */
body.horror .spiral-background {
    display: block;
}