/* ========== 变量 ========== */
:root {
    /* 亮色主题 - 暖色调可爱版 */
    --color-primary: #F8A5A5;
    --color-primary-light: #FFE5E5;
    --color-secondary: #A5B8F8;
    --color-secondary-light: #E5ECFF;
    --color-surface: #FFFBF8;
    --color-surface-variant: #FFF0E8;
    --color-on-surface: #4A3A32;
    --color-on-surface-variant: #7A6A62;
    --color-background: #f0e8e0;
    --color-card-bg: rgba(255, 255, 255, 0.4);
    --color-card-border: rgba(255, 255, 255, 0.8);
    --color-shadow: rgba(248, 165, 165, 0.15);
    
    /* 阴影 */
    --shadow-1: 0 4px 12px var(--color-shadow);
    --shadow-2: 0 8px 24px rgba(248, 165, 165, 0.25);
    --shadow-3: 0 16px 32px rgba(248, 165, 165, 0.3);
    
    /* 圆角 */
    --radius-small: 12px;
    --radius-medium: 20px;
    --radius-large: 28px;
    --radius-extra-large: 36px;
    --radius-full: 999px;
    
    /* 间距 */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    
    /* 字体 */
    --font-family: 'Quicksand', 'Segoe UI', system-ui, sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    
    /* 毛玻璃模糊度 */
    --blur-amount: 12px;
    
    /* 侧边栏宽度 */
    --sidebar-width: 240px;
    --sidebar-collapsed-width: 70px;
}

/* 暗色主题 */
[data-theme="dark"] {
    --color-primary: #FF8585;
    --color-primary-light: #4A3A3A;
    --color-secondary: #8598FF;
    --color-secondary-light: #2A2A4A;
    --color-surface: #2A2A2A;
    --color-surface-variant: #3A3A3A;
    --color-on-surface: #E0E0E0;
    --color-on-surface-variant: #B0B0B0;
    --color-background: #1A1A1A;
    --color-card-bg: rgba(40, 40, 40, 0.6);
    --color-card-border: rgba(100, 100, 100, 0.8);
    --color-shadow: rgba(255, 133, 133, 0.2);
    
    --shadow-1: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-3: 0 16px 32px rgba(0, 0, 0, 0.5);
}

/* ========== 动画 ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* ========== 基础样式 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-background);
    
    /* 背景图片完美居中填充 */
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    
    min-height: 100vh;
    color: var(--color-on-surface);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease, background-image 0.5s ease;
}

/* 手机版背景优化 */
@media (max-width: 768px) {
    body {
        background-attachment: scroll;
    }
}

/* ===== 布局容器 ===== */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ===== 左侧边栏 ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-card-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-right: 3px solid var(--color-card-border);
    padding: var(--space-5) 0;
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease, background-color 0.3s ease;
    position: relative;
    z-index: 20;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

/* 收缩按钮 */
.sidebar-toggle {
    position: absolute;
    right: -15px;
    top: 20px;
    width: 30px;
    height: 30px;
    background: var(--color-primary);
    border: 3px solid white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    z-index: 30;
    box-shadow: var(--shadow-2);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.sidebar-toggle:hover {
    transform: scale(1.1);
}

.sidebar-toggle span {
    font-size: 1rem;
    color: white;
}

/* 头像区域 */
.profile-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4) var(--space-3);
    margin-bottom: var(--space-4);
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 40% 60% 40% 60% / 60% 40% 60% 40%;
    background: var(--color-primary-light);
    border: 4px solid white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-2);
    transition: all 0.3s ease, background-color 0.3s ease;
}

.sidebar.collapsed .avatar {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
}

.profile-name {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-on-surface);
    text-shadow: 2px 2px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease, color 0.3s ease;
    white-space: nowrap;
}

.sidebar.collapsed .profile-name {
    font-size: 0;
}

/* 标签页导航 */
.nav-tabs {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: 0 var(--space-3);
    flex: 1;
}

.nav-tab {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-full);
    color: var(--color-on-surface-variant);
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    border: 2px solid transparent;
}

.nav-tab .emoji-icon {
    margin-right: var(--space-3);
    min-width: 24px;
    font-size: 1.3rem;
}

.sidebar.collapsed .nav-tab span:not(.emoji-icon) {
    display: none;
}

.sidebar.collapsed .nav-tab .emoji-icon {
    margin-right: 0;
}

.nav-tab:hover {
    background: var(--color-card-bg);
    border-color: var(--color-card-border);
    color: var(--color-primary);
}

.nav-tab.active {
    background: var(--color-card-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 500;
}

/* 主题切换按钮 */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: var(--space-3) var(--space-4);
    margin: var(--space-3) var(--space-3);
    border-radius: var(--radius-full);
    background: var(--color-card-bg);
    border: 2px solid var(--color-card-border);
    color: var(--color-on-surface);
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.theme-toggle span {
    font-size: 1rem;
}

.sidebar.collapsed .theme-toggle span:last-child {
    display: none;
}

/* 侧边栏底部 */
.sidebar-footer {
    margin-top: auto;
    padding: var(--space-4) var(--space-3);
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
    text-align: center;
    border-top: 2px dashed var(--color-card-border);
}

.sidebar.collapsed .sidebar-footer {
    font-size: 0;
}

/* ===== 右侧主内容区 ===== */
.main-content {
    flex: 1;
    padding: var(--space-5);
    overflow-y: auto;
    max-width: calc(100% - var(--sidebar-width));
    transition: max-width 0.3s ease;
}

.sidebar.collapsed + .main-content {
    max-width: calc(100% - var(--sidebar-collapsed-width));
}

/* 卡片网格 */
.cards-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    max-width: 700px;
    margin: 0 auto;
}

/* 卡片毛玻璃效果 */
.card {
    background: var(--color-card-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-radius: var(--radius-extra-large);
    padding: var(--space-5);
    border: 3px solid var(--color-card-border);
    box-shadow: var(--shadow-2);
    transition: all 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
    animation: fadeIn 0.5s ease;
}

.card:hover {
    transform: translateY(-4px);
    background: var(--color-card-bg);
    box-shadow: var(--shadow-3);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 2px dashed var(--color-card-border);
}

.emoji-large {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-card-bg);
    border-radius: 50%;
    border: 2px solid white;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-on-surface);
}

.welcome-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.welcome-text p {
    margin-bottom: var(--space-2);
    color: var(--color-on-surface-variant);
}

.highlight {
    color: var(--color-primary);
    font-weight: 500;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.link-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--color-card-bg);
    border-radius: var(--radius-large);
    border: 2px solid var(--color-card-border);
    text-decoration: none;
    color: var(--color-on-surface);
    transition: all 0.3s ease;
}

.link-item:hover {
    background: var(--color-card-bg);
    transform: translateX(5px);
    border-color: var(--color-primary);
}

.link-item .emoji-icon {
    font-size: 1.3rem;
    color: var(--color-primary);
    width: 32px;
    text-align: center;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--color-card-bg);
    border-radius: var(--radius-large);
    border: 2px solid var(--color-card-border);
    cursor: pointer;
    transition: all 0.3s ease;
}

.activity-item:hover {
    background: var(--color-card-bg);
    transform: translateX(5px);
    border-color: var(--color-primary);
}

.activity-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--color-primary-light);
    border: 2px solid white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.activity-icon span {
    font-size: 1.2rem;
}

.activity-content {
    flex: 1;
}

.activity-content p {
    font-size: 0.95rem;
    margin-bottom: var(--space-1);
    color: var(--color-on-surface);
}

.activity-time {
    font-size: 0.8rem;
    color: var(--color-on-surface-variant);
}

.server-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.server-ip {
    background: var(--color-card-bg);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-full);
    border: 2px solid white;
    font-family: monospace;
    font-size: 1.3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--color-on-surface);
}

.server-ip:hover {
    background: var(--color-primary);
    color: white;
}

.server-ip span {
    margin-right: 8px;
}

.server-tags {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    justify-content: center;
}

.tag {
    background: var(--color-card-bg);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    border: 2px solid white;
    font-size: 0.9rem;
    color: var(--color-on-surface);
}

.version-info {
    text-align: center;
    font-size: 1rem;
    color: var(--color-on-surface-variant);
    background: var(--color-card-bg);
    padding: var(--space-2);
    border-radius: var(--radius-full);
    border: 2px dashed var(--color-card-border);
}

.footer-card {
    text-align: center;
    color: var(--color-on-surface-variant);
}

.footer-card a {
    color: var(--color-primary);
    text-decoration: none;
}

/* ===== 手机版适配 ===== */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: var(--space-3);
        border-right: none;
        border-bottom: 3px solid var(--color-card-border);
        backdrop-filter: blur(15px);
    }

    .sidebar.collapsed {
        width: 100%;
        height: auto;
    }

    .sidebar-toggle {
        display: none;
    }

    .profile-section {
        flex-direction: row;
        gap: var(--space-3);
        padding: var(--space-2);
    }

    .avatar {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        margin-bottom: 0;
    }

    .profile-name {
        font-size: 1.2rem;
    }

    .nav-tabs {
        flex-direction: row;
        overflow-x: auto;
        padding: var(--space-2) 0;
        gap: var(--space-2);
        -webkit-overflow-scrolling: touch;
    }

    .nav-tab {
        padding: var(--space-2) var(--space-3);
        flex-shrink: 0;
    }

    .nav-tab .emoji-icon {
        margin-right: var(--space-2);
    }

    .sidebar.collapsed .nav-tab span {
        display: inline;
    }

    .theme-toggle {
        margin: var(--space-2) var(--space-3);
    }

    .sidebar-footer {
        display: none;
    }

    .main-content {
        max-width: 100% !important;
        padding: var(--space-4);
    }

    .cards-grid {
        gap: var(--space-4);
    }

    .card {
        padding: var(--space-4);
        backdrop-filter: blur(15px);
    }

    .card-header h2 {
        font-size: 1.3rem;
    }

    .links-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .profile-name {
        font-size: 1rem;
    }

    .nav-tab {
        padding: var(--space-2);
    }

    .nav-tab span {
        font-size: 0.8rem;
    }

    .card-header .emoji-large {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }

    .card-header h2 {
        font-size: 1.2rem;
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 600px) {
    .sidebar {
        padding: var(--space-3) 0;
    }
    
    .profile-section {
        margin-bottom: var(--space-2);
    }
    
    .avatar {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
}