/* 基础样式 */
:root {
    --gradient-start: #e0f2fe;
    --gradient-end: #f0f9ff;
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --border-color: rgba(0, 0, 0, 0.1);
    --card-hover-border: rgba(59, 130, 246, 0.3);
    --button-bg: #3b82f6;
    --button-hover: #2563eb;
    --button-text: #ffffff;
    --speed-fast: #10b981;
    --speed-medium: #f59e0b;
    --speed-slow: #ef4444;
}

html.dark {
    --gradient-start: #1e293b;
    --gradient-end: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.95);
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --border-color: rgba(255, 255, 255, 0.1);
    --card-hover-border: rgba(59, 130, 246, 0.3);
    --button-bg: #3b82f6;
    --button-hover: #2563eb;
    --button-text: #ffffff;
    --speed-fast: #10b981;
    --speed-medium: #f59e0b;
    --speed-slow: #ef4444;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

/* 玻璃态效果 */
.glass-effect {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

/* 主题切换按钮 */
.theme-switch {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.theme-switch:hover {
    transform: scale(1.1);
}

.theme-switch i {
    color: var(--text-primary);
    font-size: 20px;
    transition: transform 0.3s ease;
}

.theme-switch:hover i {
    transform: rotate(30deg);
}

/* 卡片样式 */
.card-hover {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-primary);
}

.card-hover:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--card-hover-border);
}

.card-hover h2 {
    color: var(--text-primary);
}

.card-hover p {
    color: var(--text-secondary);
}

.card-hover .text-xs {
    color: var(--text-secondary);
}

/* 网站图标 */
.site-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 12px;
    padding: 4px;
    background: var(--card-bg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.site-icon.loaded {
    opacity: 1;
}

/* 速度指示器 */
.speed-indicator {
    position: relative;
    width: 60px;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.speed-indicator::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--speed-fast);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.speed-fast::after {
    width: 100%;
    background: var(--speed-fast);
}

.speed-medium::after {
    width: 70%;
    background: var(--speed-medium);
}

.speed-slow::after {
    width: 40%;
    background: var(--speed-slow);
}

/* 按钮样式 */
.btn-hover {
    transition: all 0.2s ease;
    background: var(--button-bg);
    color: var(--button-text);
}

.btn-hover:hover {
    transform: translateY(-2px);
    background: var(--button-hover);
}

/* 复制按钮 */
.copy-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1.5px solid var(--border-color);
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.copy-btn:hover {
    background: var(--card-bg);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-color: var(--text-secondary);
}

.copy-btn:active {
    transform: translateY(0);
    box-shadow: none;
    background: #f3f4f6;
    border-color: #4b5563;
}

.copy-btn.copied {
    background: #10b981;
    color: white;
    border-color: #059669;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.2);
}

.copy-btn.error {
    background: #ef4444;
    color: white;
    border-color: #dc2626;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
}

.copy-btn.copying {
    background: #3b82f6;
    color: white;
    border-color: #2563eb;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

/* 复制提示 */
.copy-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    opacity: 0;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    white-space: nowrap;
    margin-bottom: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.copy-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
}

.copy-tooltip.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

/* 复制图标 */
.copy-icon {
    position: relative;
    width: 18px;
    height: 18px;
}

.copy-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 14px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 2px;
}

.copy-icon::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    width: 14px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 2px;
    background: #ffffff;
}

.copy-btn:hover .copy-icon::after {
    background: #f9fafb;
}

.copy-btn:active .copy-icon::after {
    background: #f3f4f6;
}

/* 公告栏 */
.announcement-bar {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    padding: 12px 20px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    color: var(--text-primary);
}

.announcement-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: shine 3s infinite;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--button-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--button-text);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    background: var(--button-hover);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.back-to-top:active {
    transform: translateY(-2px);
}

/* 加载状态 */
.loading-skeleton {
    background: linear-gradient(90deg, 
        var(--card-bg) 25%, 
        var(--border-color) 50%, 
        var(--card-bg) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 8px;
}

/* 动画 */
@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes shine {
    0% { left: -100%; }
    20% { left: 100%; }
    100% { left: 100%; }
}

@keyframes checkmark {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}