/* ============================================
   视觉社 · 设计系统 v2.0
   ============================================ */

:root {
  /* 品牌色 */
  --color-primary: #7C3AED;
  --color-primary-light: #a78bfa;
  --color-primary-dark: #5B21B6;
  --color-accent: #f472b6;
  
  /* 背景层级 */
  --color-bg: #0a0a0a;
  --color-bg-elevated: #121212;
  --color-card: #1a1a1a;
  --color-card-hover: #222222;
  --color-input: #0f0f0f;
  
  /* 边框与分割 */
  --color-border: #2a2a2a;
  --color-border-light: #3a3a3a;
  
  /* 文本 */
  --color-text: #f5f5f5;
  --color-text-secondary: #d4d4d4;
  --color-text-muted: #888888;
  --color-text-placeholder: #555555;
  
  /* 功能色 */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  
  /* 积分/金币 */
  --color-point: #fbbf24;
  
  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #7C3AED 0%, #5B21B6 100%);
  --gradient-primary-hover: linear-gradient(135deg, #8B5CF6 0%, #6D28D9 100%);
  --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.3);
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   布局容器
   ============================================ */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
}

.page-container {
  padding-top: 1.5rem;
  padding-bottom: 3rem;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
}

.brand-logo {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
  box-shadow: var(--shadow-glow);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(90deg, #fff 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
}

/* 主导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.875rem;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--color-primary-light);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* 右侧操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* 搜索框 */
.nav-search {
  position: relative;
}

.nav-search input {
  width: 200px;
  padding: 0.5rem 0.75rem 0.5rem 2.25rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text);
  font-size: 0.8125rem;
  transition: all var(--transition-fast);
}

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

.nav-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  width: 240px;
}

.nav-search i {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

/* 积分显示 */
.points-badge {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.25);
  border-radius: 999px;
  color: var(--color-point);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.points-badge:hover {
  background: rgba(251, 191, 36, 0.15);
  transform: translateY(-1px);
}

.points-badge i {
  font-size: 0.75rem;
}

/* 签到按钮 */
.signin-btn {
  padding: 0.375rem 0.875rem;
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  border-radius: 999px;
  color: white;
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

.signin-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

.signin-btn.done {
  background: rgba(100, 100, 100, 0.3);
  box-shadow: none;
  cursor: default;
  color: var(--color-text-muted);
}

/* 投稿按钮 */
.submit-btn {
  padding: 0.375rem 1rem;
  background: var(--gradient-primary);
  border-radius: 999px;
  color: white;
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

/* 用户下拉 */
.user-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem 0.375rem 0.375rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: all var(--transition-fast);
}

.user-toggle:hover {
  border-color: var(--color-border-light);
  background: var(--color-card-hover);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: white;
  overflow: hidden;
  flex-shrink: 0;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text);
  max-width: 70px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  padding: 0.5rem;
  color: var(--color-text-muted);
  font-size: 1.25rem;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
  .nav-search {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .user-name {
    display: none;
  }
}

/* ============================================
   Banner 轮播
   ============================================ */
.banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
  background: var(--color-card);
}

.banner-slides {
  position: relative;
  height: 240px;
}

.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.banner-slide.active {
  opacity: 1;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-slide-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem 2rem;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
}

.banner-slide-tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: rgba(124, 58, 237, 0.9);
  border-radius: 4px;
  font-size: 0.75rem;
  color: white;
  font-weight: 600;
  margin-bottom: 0.5rem;
  width: fit-content;
}

.banner-slide-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.25rem;
}

.banner-slide-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
}

.banner-dots {
  position: absolute;
  bottom: 1rem;
  right: 1.5rem;
  display: flex;
  gap: 0.375rem;
}

.banner-dot {
  width: 24px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.banner-dot.active {
  background: white;
  width: 32px;
}

@media (max-width: 640px) {
  .banner-slides {
    height: 160px;
  }
  .banner-slide-title {
    font-size: 1.125rem;
  }
  .banner-slide-desc {
    font-size: 0.75rem;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
}

/* ============================================
   页面布局（主内容 + 侧栏）
   ============================================ */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: 1fr;
  }
}

.main-content {
  min-width: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.sidebar-title i {
  color: var(--color-primary);
}

.sidebar-more {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.sidebar-more:hover {
  color: var(--color-primary-light);
}

.sidebar-body {
  padding: 0.75rem 1rem;
}

/* ============================================
   区块标题栏
   ============================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* ============================================
   卡片样式
   ============================================ */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.card:hover {
  border-color: var(--color-primary);
  background: var(--color-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-bg);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-body {
  padding: 0.875rem;
}

.card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* 标签胶囊 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.5rem;
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: 999px;
  font-size: 0.6875rem;
  color: var(--color-primary-light);
  font-weight: 500;
}

.tag-blue { background: rgba(59, 130, 246, 0.15); border-color: rgba(59, 130, 246, 0.25); color: #60a5fa; }
.tag-green { background: rgba(16, 185, 129, 0.15); border-color: rgba(16, 185, 129, 0.25); color: #34d399; }
.tag-orange { background: rgba(249, 115, 22, 0.15); border-color: rgba(249, 115, 22, 0.25); color: #fb923c; }
.tag-yellow { background: rgba(251, 191, 36, 0.15); border-color: rgba(251, 191, 36, 0.25); color: #fbbf24; }
.tag-red { background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.25); color: #f87171; }
.tag-gray { background: rgba(100, 100, 100, 0.15); border-color: rgba(100, 100, 100, 0.25); color: #a3a3a3; }

/* 悬赏标签 */
.reward-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.625rem;
  background: var(--gradient-gold);
  border-radius: 4px;
  font-size: 0.75rem;
  color: #78350f;
  font-weight: 700;
}

/* 解锁标签 */
.lock-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.625rem;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  border-radius: 4px;
  font-size: 0.75rem;
  color: white;
  font-weight: 600;
}

/* ============================================
   文章卡片网格
   ============================================ */
.article-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .article-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 大卡片文章 */
.article-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.article-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.article-card-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}

.article-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card-cover img {
  transform: scale(1.06);
}

.article-card-body {
  padding: 1rem 1.125rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

.article-card-excerpt {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ============================================
   社区论坛
   ============================================ */
.forum-tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.25rem;
  background: var(--color-card);
  padding: 0.375rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  width: fit-content;
}

.forum-tab {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.forum-tab:hover {
  color: var(--color-text);
}

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

/* 帖子列表 */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.post-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.125rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.post-card:hover {
  border-color: var(--color-primary);
  background: var(--color-card-hover);
}

.post-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.post-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
}

.post-card-tags {
  display: flex;
  gap: 0.375rem;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.post-card-excerpt {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ============================================
   姬查查 · 瀑布流
   ============================================ */
.masonry {
  column-count: 2;
  column-gap: 0.75rem;
}

@media (min-width: 640px) {
  .masonry {
    column-count: 3;
  }
}

@media (min-width: 1024px) {
  .masonry {
    column-count: 4;
  }
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 0.75rem;
}

/* 人物卡片 */
.person-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
  display: block;
}

.person-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.person-card-avatar {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--color-bg);
}

.person-card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-card-info {
  padding: 0.75rem;
  text-align: center;
}

.person-card-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.person-card-tag {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

/* 作品卡片（姬查查详情页） */
.work-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.work-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.work-card-cover {
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
}

.work-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-card-body {
  padding: 0.625rem 0.75rem;
}

.work-card-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--gradient-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-border-light);
  background: var(--color-card-hover);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

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

.btn-ghost:hover {
  color: var(--color-text);
  background: rgba(255,255,255,0.05);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ============================================
   表单
   ============================================ */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.375rem;
}

.form-label .required {
  color: var(--color-danger);
  margin-left: 0.125rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: var(--color-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

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

.form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* 多选标签 */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.checkbox-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: var(--color-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.checkbox-item input[type="checkbox"] {
  display: none;
}

.checkbox-item:hover {
  border-color: var(--color-border-light);
}

.checkbox-item.selected {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

/* ============================================
   模态框
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-title i {
  color: var(--color-primary);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255,255,255,0.1);
  color: var(--color-text);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-border);
}

/* ============================================
   签到弹窗
   ============================================ */
.signin-result {
  text-align: center;
  padding: 2rem 1rem;
}

.signin-result-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1rem;
  background: var(--gradient-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #78350f;
  animation: popIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
  0% { transform: scale(0); }
  70% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.signin-result-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.signin-result-points {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.signin-result-sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* ============================================
   分页
   ============================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.375rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.pagination-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled):not(.active) {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.pagination-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
}

.pagination-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ============================================
   用户中心
   ============================================ */
.profile-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  overflow: hidden;
  flex-shrink: 0;
}

.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-info {
  flex: 1;
  min-width: 0;
}

.profile-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.profile-id {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.profile-stats {
  display: flex;
  gap: 1.5rem;
}

.profile-stat {
  display: flex;
  flex-direction: column;
}

.profile-stat-value {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.profile-stat-label {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

/* 积分中心 */
.point-card {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.1), rgba(245, 158, 11, 0.05));
  border: 1px solid rgba(251, 191, 36, 0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.point-balance-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.point-balance-value {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.point-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

.point-stat {
  background: rgba(0,0,0,0.2);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
}

/* 签到日历 */
.signin-calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.375rem;
  margin-bottom: 1rem;
}

.signin-day {
  aspect-ratio: 1;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.signin-day.signed {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--color-success);
}

.signin-day.today {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  font-weight: 600;
}

/* ============================================
   空状态
   ============================================ */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state-text {
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
}

/* ============================================
   Toast 提示
   ============================================ */
.toast-container {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  padding: 0.75rem 1.25rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--color-text);
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease-out;
  pointer-events: auto;
}

.toast-success { border-color: rgba(16, 185, 129, 0.4); }
.toast-error { border-color: rgba(239, 68, 68, 0.4); }
.toast-warning { border-color: rgba(245, 158, 11, 0.4); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   页脚
   ============================================ */
.footer {
  margin-top: 3rem;
  padding: 2rem 1rem;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.footer-links a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-text {
  font-size: 0.75rem;
  color: var(--color-text-placeholder);
  line-height: 1.6;
}

/* ============================================
   滚动条美化
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-light);
}

/* ============================================
   动画工具类
   ============================================ */
.fade-in { animation: fadeIn 0.3s ease-out; }
.slide-up { animation: slideUp 0.4s ease-out; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   响应式调整
   ============================================ */
@media (max-width: 640px) {
  .banner-slides { height: 160px; }
  .banner-slide-content { padding: 1rem 1.25rem; }
  .banner-slide-title { font-size: 1.125rem; }
  
  .page-container { padding-top: 1rem; }
  
  .article-grid { grid-template-columns: 1fr; }
  
  .masonry { column-count: 2; column-gap: 0.5rem; }
  .masonry-item { margin-bottom: 0.5rem; }
  
  .forum-tab { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }
  
  .profile-header { flex-direction: column; text-align: center; gap: 1rem; }
  .profile-stats { justify-content: center; }
  
  .points-badge { display: none; }
}