/**
 * 海亮表白墙 v2.6 - 现代化UI设计
 * 设计语言：小红书扁平风格 + 毛玻璃模糊效果
 * 动画：流畅自然的微交互
 */

/* ===== CSS变量 ===== */
:root {
    /* 主色调 */
    --primary: #ff2442;
    --primary-light: #ff6b81;
    --primary-dark: #e01f3b;
    --primary-gradient: linear-gradient(135deg, #ff2442 0%, #ff6b81 100%);
    --primary-glow: 0 8px 32px rgba(255, 36, 66, 0.25);
    
    /* 中性色 */
    --text-primary: #1a1a1a;
    --text-secondary: #666;
    --text-tertiary: #999;
    --text-placeholder: #bbb;
    
    /* 背景色 */
    --bg-primary: #f7f8fa;
    --bg-secondary: #fff;
    --bg-tertiary: #f0f1f3;
    --bg-hover: rgba(0, 0, 0, 0.03);
    
    /* 边框 */
    --border-light: rgba(0, 0, 0, 0.06);
    --border-medium: rgba(0, 0, 0, 0.1);
    
    /* 毛玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-dark: rgba(255, 255, 255, 0.85);
    --glass-blur: blur(20px);
    --glass-blur-light: blur(12px);
    --glass-border: rgba(255, 255, 255, 0.3);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* 动画 */
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --duration-fast: 0.15s;
    --duration-normal: 0.25s;
    --duration-slow: 0.4s;
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* ===== 毛玻璃头部导航 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--duration-normal) var(--ease-smooth);
}

.header.scrolled {
    background: var(--glass-bg-dark);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    max-width: 100%;
}

/* Logo动画 */
.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: transform var(--duration-fast) var(--ease-spring);
}

.logo:active {
    transform: scale(0.95);
}

.logo i {
    font-size: 22px;
    animation: heartbeat 2s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10% { transform: scale(1.1); }
    20% { transform: scale(1); }
    30% { transform: scale(1.1); }
    40% { transform: scale(1); }
}

/* ===== 按钮系统 ===== */
.nav-btn {
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-smooth);
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.nav-btn:active::before {
    width: 200px;
    height: 200px;
}

.nav-btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.nav-btn-ghost:hover {
    background: var(--bg-hover);
}

.nav-btn-ghost:active {
    transform: scale(0.96);
}

.nav-btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: var(--primary-glow);
}

.nav-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 36px rgba(255, 36, 66, 0.3);
}

.nav-btn-primary:active {
    transform: scale(0.96) translateY(0);
}

/* ===== 用户头像 ===== */
.user-avatar-small {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    object-fit: cover;
    border: 2px solid transparent;
    background: linear-gradient(#fff, #fff) padding-box,
                var(--primary-gradient) border-box;
    transition: all var(--duration-fast) var(--ease-spring);
}

.user-avatar-small:hover {
    transform: scale(1.08);
}

.user-avatar-small:active {
    transform: scale(0.95);
}

/* ===== 搜索框 ===== */
.search-wrapper {
    padding: 8px 16px 12px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    padding: 10px 16px;
    transition: all var(--duration-normal) var(--ease-smooth);
    border: 1.5px solid transparent;
}

.search-box:focus-within {
    background: #fff;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px rgba(255, 36, 66, 0.1);
}

.search-box i {
    color: var(--text-tertiary);
    font-size: 18px;
    transition: color var(--duration-fast);
}

.search-box:focus-within i {
    color: var(--primary);
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 15px;
    margin-left: 10px;
    color: var(--text-primary);
}

.search-box input::placeholder {
    color: var(--text-placeholder);
}

.search-close {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    font-size: 16px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.search-close:hover {
    background: var(--primary);
    color: #fff;
}

/* ===== 话题标签 ===== */
.topics-wrapper {
    background: var(--bg-secondary);
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-light);
}

.topics-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.topics-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.topics-more {
    font-size: 13px;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 2px;
}

.topics-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.topics-list::-webkit-scrollbar {
    display: none;
}

.topic-tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    background: linear-gradient(135deg, rgba(255, 36, 66, 0.08) 0%, rgba(255, 107, 129, 0.05) 100%);
    border: 1px solid rgba(255, 36, 66, 0.15);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
    white-space: nowrap;
    flex-shrink: 0;
}

.topic-tag:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--primary-glow);
}

.topic-tag:active {
    transform: scale(0.95);
}

.topic-tag .hot-icon {
    margin-right: 4px;
    font-size: 12px;
}

.topic-tag .count {
    font-size: 11px;
    opacity: 0.7;
    margin-left: 6px;
}

/* ===== 滚动公告 ===== */
.marquee-wrapper {
    background: linear-gradient(90deg, rgba(255, 249, 249, 0.9), rgba(255, 255, 255, 0.9));
    backdrop-filter: var(--glass-blur-light);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    overflow: hidden;
}

.marquee-icon {
    width: 28px;
    height: 28px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    flex-shrink: 0;
}

.marquee-icon i {
    color: #fff;
    font-size: 14px;
}

.marquee-content {
    flex: 1;
    overflow: hidden;
}

.marquee-text {
    display: inline-block;
    white-space: nowrap;
    font-size: 13px;
    color: var(--text-secondary);
    animation: marqueeScroll 25s linear infinite;
    padding-left: 100%;
}

@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); }
}

.marquee-wrapper:hover .marquee-text {
    animation-play-state: paused;
}

/* ===== 排序选择器 ===== */
.sort-wrapper {
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.action-btns {
    display: flex;
    align-items: center;
    gap: 12px;
}

.action-btn-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    cursor: pointer;
}

.action-btn-wrap span {
    font-size: 10px;
    color: var(--text-tertiary);
}

.refresh-btn, .search-trigger, .app-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
}

.refresh-btn i, .search-trigger i, .app-btn i {
    font-size: 18px;
    color: var(--text-secondary);
    transition: all var(--duration-fast);
}

.refresh-btn:hover, .search-trigger:hover, .app-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--primary-glow);
}

.refresh-btn:hover i, .search-trigger:hover i, .app-btn:hover i {
    color: #fff;
}

.refresh-btn:active, .search-trigger:active, .app-btn:active {
    transform: scale(0.92);
}

.refresh-btn.loading i {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.sort-selector {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: all var(--duration-fast);
}

.sort-selector:hover {
    background: var(--bg-hover);
}

.sort-selector i {
    margin-left: 6px;
    font-size: 12px;
    transition: transform var(--duration-fast);
}

.sort-selector.open i {
    transform: rotate(180deg);
}

.sort-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 120px;
    display: none;
    z-index: 10;
    overflow: hidden;
    animation: dropdownIn var(--duration-fast) var(--ease-spring);
}

@keyframes dropdownIn {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.sort-dropdown.show {
    display: block;
}

.sort-option {
    padding: 12px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.sort-option:hover {
    background: var(--bg-tertiary);
}

.sort-option.active {
    color: var(--primary);
    font-weight: 500;
}

/* ===== 瀑布流卡片 ===== */
.waterfall {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding: 10px;
}

.card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    opacity: 0;
    transform: translateY(24px);
    animation: cardFadeIn 0.5s var(--ease-spring) forwards;
    transition: transform var(--duration-fast) var(--ease-spring),
                box-shadow var(--duration-fast);
    will-change: transform;
}

.card:nth-child(odd) {
    animation-delay: 0.05s;
}

.card:nth-child(even) {
    animation-delay: 0.1s;
}

@keyframes cardFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card:active {
    transform: scale(0.98);
}

/* 图片容器 */
.card-image-wrap {
    position: relative;
    width: 100%;
    background: var(--bg-tertiary);
    min-height: 100px;
    overflow: hidden;
}

.card-image {
    width: 100%;
    display: block;
    opacity: 0;
    transition: opacity 0.4s var(--ease-smooth), transform 0.4s var(--ease-smooth);
}

.card-image.loaded {
    opacity: 1;
}

.card:hover .card-image {
    transform: scale(1.03);
}

/* 加载进度 */
.card-image-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
}

.card-image-progress {
    width: 50%;
    height: 3px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.card-image-progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    width: 0%;
    transition: width 0.3s;
    border-radius: 2px;
}

/* 纯文字卡片 */
.card-text-bg {
    min-height: 140px;
    padding: 20px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.card-text-bg::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 8px;
    font-size: 100px;
    font-family: Georgia, serif;
    opacity: 0.06;
    line-height: 1;
}

/* 渐变背景 */
.text-bg-1 { background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%); }
.text-bg-2 { background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }
.text-bg-3 { background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%); }
.text-bg-4 { background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%); }
.text-bg-5 { background: linear-gradient(135deg, #fddb92 0%, #d1fdff 100%); }
.text-bg-6 { background: linear-gradient(135deg, #c1dfc4 0%, #deecdd 100%); }
.text-bg-7 { background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%); }
.text-bg-8 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; }

.card-text-content {
    font-family: 'HYLLHJ', "PingFang SC", sans-serif;
    font-size: 15px;
    line-height: 1.7;
    text-align: center;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.card-body {
    padding: 12px;
}

.card-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 10px;
}

.card-to {
    font-size: 12px;
    color: var(--primary);
    margin-bottom: 6px;
    font-weight: 500;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-user {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
}

.card-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    object-fit: cover;
}

.card-username {
    margin-left: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 点赞按钮 */
.card-like {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    margin: -6px;
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast);
}

.card-like:active {
    transform: scale(0.9);
}

.card-like i {
    font-size: 18px;
    transition: all var(--duration-fast) var(--ease-spring);
}

.card-like.liked {
    color: var(--primary);
}

.card-like.liked i {
    animation: likeAnim 0.5s var(--ease-bounce);
}

@keyframes likeAnim {
    0% { transform: scale(1); }
    25% { transform: scale(1.3); }
    50% { transform: scale(0.9); }
    75% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* 投票标识 */
.card-vote-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    font-size: 11px;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 8px;
}

/* ===== 加载更多 ===== */
.load-more {
    text-align: center;
    padding: 20px 16px 32px;
}

.load-more-btn {
    padding: 12px 36px;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-medium);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--duration-fast) var(--ease-spring);
}

.load-more-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.load-more-btn:active {
    transform: scale(0.96);
}

.load-more-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.load-more-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: none;
}

.load-more-btn.loading .load-more-spinner {
    display: block;
}

.load-more-end {
    color: var(--text-tertiary);
    font-size: 13px;
    padding: 20px;
    text-align: center;
}

/* ===== 底部导航 ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
    z-index: 100;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 10px;
    color: var(--text-tertiary);
    text-decoration: none;
    padding: 4px 16px;
    transition: all var(--duration-fast);
}

.bottom-nav-item.active {
    color: var(--primary);
}

.bottom-nav-item i {
    font-size: 24px;
    margin-bottom: 2px;
    transition: transform var(--duration-fast) var(--ease-spring);
}

.bottom-nav-item:active i {
    transform: scale(0.85);
}

/* 发帖按钮 */
.post-btn {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    margin-top: -24px;
    box-shadow: var(--primary-glow);
    transition: all var(--duration-fast) var(--ease-spring);
    position: relative;
}

.post-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: var(--primary-gradient);
    opacity: 0;
    animation: postBtnPulse 2s ease-out infinite;
}

@keyframes postBtnPulse {
    0% {
        transform: scale(1);
        opacity: 0.4;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.post-btn:active {
    transform: scale(0.9);
}

/* ===== 发帖面板 ===== */
.post-action-sheet {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 500;
    display: none;
    align-items: flex-end;
    justify-content: center;
}

.post-action-sheet.active {
    display: flex;
}

.action-sheet-content {
    width: 100%;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding-bottom: env(safe-area-inset-bottom);
    animation: sheetSlideUp 0.35s var(--ease-spring);
}

@keyframes sheetSlideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.action-sheet-item {
    padding: 18px 20px;
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.action-sheet-item:active {
    background: var(--bg-tertiary);
}

.action-sheet-item.cancel {
    color: var(--text-tertiary);
    border-bottom: none;
    margin-top: 8px;
    background: var(--bg-tertiary);
}

/* ===== 弹窗系统 ===== */
.modal-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-mask.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 360px;
    max-height: 85vh;
    overflow: hidden;
    animation: modalSlideUp 0.35s var(--ease-spring);
    box-shadow: var(--shadow-xl);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-light);
}

.modal-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.modal-close:hover {
    background: var(--primary);
    color: #fff;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
}

/* ===== 表单元素 ===== */
.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: 15px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--duration-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 36, 66, 0.1);
}

.form-input::placeholder {
    color: var(--text-placeholder);
}

.form-btn {
    width: 100%;
    padding: 14px 20px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
    box-shadow: var(--primary-glow);
}

.form-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(255, 36, 66, 0.35);
}

.form-btn:active {
    transform: scale(0.98);
}

.form-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ===== Toast提示 ===== */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: #fff;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    z-index: 9999;
    display: none;
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-spring);
    max-width: 80%;
    text-align: center;
}

.toast.show {
    display: block;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 15px;
}

/* ===== 加载遮罩 ===== */
#loadingMask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

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

.loading-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

.loading-text {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== 下拉弹窗动画优化 ===== */
.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    display: none;
    z-index: 150;
    overflow: hidden;
}

.user-dropdown.active {
    display: block;
    animation: dropdownIn var(--duration-normal) var(--ease-spring);
}

.user-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    font-size: 14px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--duration-fast);
}

.user-dropdown a i {
    font-size: 18px;
    color: var(--text-tertiary);
}

.user-dropdown a:hover {
    background: var(--bg-tertiary);
}

.user-dropdown a:hover i {
    color: var(--primary);
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ===== 响应式优化 ===== */
@media (min-width: 768px) {
    .waterfall {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        padding: 16px;
        max-width: 1200px;
        margin: 0 auto;
    }
    
    .card {
        border-radius: var(--radius-xl);
    }
    
    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }
}

@media (min-width: 1024px) {
    .waterfall {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== 深色模式支持（可选） ===== */
@media (prefers-color-scheme: dark) {
    /* 如果需要支持深色模式，可以在这里添加 */
}

/* ===== 液态玻璃公告栏 ===== */
.marquee-wrapper {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
    border-left: none !important;
    border-right: none !important;
    padding: 12px 16px !important;
}

.marquee-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        rgba(255, 36, 66, 0.05) 0%, 
        rgba(255, 107, 129, 0.03) 50%,
        rgba(255, 36, 66, 0.05) 100%);
    pointer-events: none;
}

/* ===== 紧凑评论样式 ===== */
.comments-section {
    border-top: 6px solid var(--bg-primary) !important;
    padding: 12px 14px !important;
}

.comments-title {
    margin-bottom: 10px !important;
}

.comment-item {
    padding: 8px 0 !important;
    border-bottom: 1px solid rgba(0,0,0,0.04) !important;
}

.comment-avatar {
    width: 34px !important;
    height: 34px !important;
}

.comment-main {
    margin-left: 10px !important;
}

.comment-name {
    margin-bottom: 3px !important;
    font-size: 12px !important;
}

.comment-text {
    font-size: 14px !important;
    margin-bottom: 4px !important;
    line-height: 1.45 !important;
}

.comment-meta {
    margin-top: 2px !important;
    padding-top: 2px !important;
}

/* 二级评论更紧凑 */
.comment-replies {
    margin-top: 6px !important;
    padding-left: 36px !important;
    border-left: 2px solid rgba(255, 36, 66, 0.1) !important;
    margin-left: 4px !important;
}

.comment-replies .comment-item {
    padding: 6px 0 !important;
}

.comment-replies .comment-avatar {
    width: 26px !important;
    height: 26px !important;
}

.comment-replies .comment-main {
    margin-left: 8px !important;
}

.comment-replies .comment-name {
    font-size: 11px !important;
    margin-bottom: 2px !important;
}

.comment-replies .comment-text {
    font-size: 13px !important;
    margin-bottom: 2px !important;
}

/* ===== 表情选择器 ===== */
.sticker-picker {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.1);
    z-index: 500;
    transform: translateY(100%);
    transition: transform 0.35s var(--ease-spring);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    max-height: 55vh;
    display: flex;
    flex-direction: column;
}

.sticker-picker.show {
    transform: translateY(0);
}

.sticker-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px 10px;
    border-bottom: 1px solid var(--border-light);
    flex-shrink: 0;
}

.sticker-picker-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.sticker-picker-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    font-size: 18px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.sticker-picker-close:hover {
    background: var(--primary);
    color: #fff;
}

.sticker-tabs {
    display: flex;
    padding: 8px 12px;
    gap: 4px;
    overflow-x: auto;
    flex-shrink: 0;
    scrollbar-width: none;
}

.sticker-tabs::-webkit-scrollbar {
    display: none;
}

.sticker-tab {
    padding: 8px 14px;
    font-size: 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast);
    flex-shrink: 0;
}

.sticker-tab:hover {
    background: var(--bg-tertiary);
}

.sticker-tab.active {
    background: var(--primary-gradient);
    box-shadow: var(--primary-glow);
}

.sticker-tab .tab-name {
    font-size: 11px;
    display: block;
    margin-top: 2px;
    color: var(--text-tertiary);
}

.sticker-tab.active .tab-name {
    color: #fff;
}

.sticker-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
}

.sticker-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
}

.sticker-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
    border: 1px solid transparent;
}

.sticker-item:hover {
    transform: scale(1.15);
    background: var(--bg-tertiary);
    border-color: var(--primary-light);
}

.sticker-item:active {
    transform: scale(0.95);
}

/* GIF表情 */
.sticker-grid.gif {
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.sticker-item.gif {
    aspect-ratio: 1;
    padding: 4px;
    overflow: hidden;
}

.sticker-item.gif img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: calc(var(--radius-md) - 4px);
}

/* GIF锁定提示（网页端） */
.sticker-item.gif.locked {
    position: relative;
}

.sticker-item.gif.locked::after {
    content: '📱';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    background: rgba(0, 0, 0, 0.6);
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

/* APP下载提示弹窗 */
.app-download-tip {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 28px 24px;
    text-align: center;
    z-index: 10000;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease-spring);
    max-width: 300px;
    width: 85%;
}

.app-download-tip.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
}

.app-download-tip .icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.app-download-tip .title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.app-download-tip .desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 20px;
}

.app-download-tip .btn {
    padding: 12px 32px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--primary-glow);
}

.app-download-tip .btn-cancel {
    background: transparent;
    color: var(--text-tertiary);
    box-shadow: none;
    margin-left: 12px;
}

/* 表情按钮 */
.sticker-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
    border: none;
}

.sticker-btn:hover {
    background: var(--primary-gradient);
    transform: scale(1.1);
}

.sticker-btn:active {
    transform: scale(0.95);
}

/* 评论输入框表情按钮 */
.comment-input-wrapper {
    position: relative;
}

.comment-input-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 8px;
}

.comment-sticker-btn {
    font-size: 22px;
    cursor: pointer;
    opacity: 0.6;
    transition: all var(--duration-fast);
}

.comment-sticker-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* ===== 更多液态玻璃效果 ===== */

/* 底部导航液态玻璃 */
.bottom-nav {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border-top: 1px solid var(--glass-border) !important;
}

/* 详情页头部液态玻璃 */
.detail-header {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
}

/* 弹窗液态玻璃增强 */
.modal-content {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
}

/* 下拉选择器液态玻璃 */
.sort-dropdown {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
}

/* 用户下拉菜单液态玻璃 */
.user-dropdown {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
}

/* 发帖面板液态玻璃 */
.action-sheet-content {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
}

/* Toast液态玻璃 */
.toast {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text-primary) !important;
}

/* 加载遮罩液态玻璃 */
#loadingMask {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
}

/* 消息页面卡片液态玻璃 */
.msg-item {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    margin-bottom: 10px;
}

/* 表情在消息中的显示 */
.sticker-in-msg {
    display: inline-block;
    vertical-align: middle;
}

.sticker-in-msg.emoji {
    font-size: 1.3em;
}

.sticker-in-msg.gif img {
    max-width: 120px;
    max-height: 120px;
    border-radius: var(--radius-sm);
    vertical-align: middle;
}

/* 评论中的表情 */
.comment-text .sticker-in-msg.gif img {
    max-width: 80px;
    max-height: 80px;
}

/* ===== 优化的卡片悬浮效果 ===== */
@media (hover: hover) {
    .card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
    }
    
    .card:hover .card-image {
        transform: scale(1.05);
    }
}

/* 评论输入框表情按钮样式 */
.comment-input-wrapper {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
}

.comment-sticker-btn {
    font-size: 22px;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.2s var(--ease-spring);
    flex-shrink: 0;
    padding: 4px;
    border-radius: 8px;
}

.comment-sticker-btn:hover {
    opacity: 1;
    transform: scale(1.15);
    background: rgba(255, 36, 66, 0.1);
}

.comment-sticker-btn:active {
    transform: scale(0.95);
}

/* 修复liquid glass在webkit上的兼容性 */
@supports not (backdrop-filter: blur(1px)) {
    .header,
    .bottom-nav,
    .modal-content,
    .marquee-wrapper,
    .sticker-picker {
        background: rgba(255, 255, 255, 0.95) !important;
    }
}