/* === 词元社区公共样式 === */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap");

:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #111128;
  --bg-card: #16163a;
  --bg-card-hover: #1c1c48;
  --bg-input: #1a1a3e;
  --border-color: #2a2a5a;
  --border-hover: #4a4aaa;
  --text-primary: #e8e8f0;
  --text-secondary: #9898b8;
  --text-muted: #6868a0;
  --accent-purple: #8b5cf6;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-pink: #ec4899;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --gradient-primary: linear-gradient(135deg, #8b5cf6, #3b82f6);
  --gradient-hero: linear-gradient(135deg, #0a0a1a 0%, #1a1040 50%, #0a1a3a 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-hover: 0 8px 32px rgba(139,92,246,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 4px;
}

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

body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent-purple); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-blue); }

/* Toast */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-100px);
  padding: 12px 24px; border-radius: var(--radius-sm);
  font-size: 14px; z-index: 10000; transition: transform 0.3s ease;
  backdrop-filter: blur(10px);
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast-info { background: rgba(59,130,246,0.9); color: #fff; }
.toast-success { background: rgba(16,185,129,0.9); color: #fff; }
.toast-error { background: rgba(239,68,68,0.9); color: #fff; }

/* 导航栏 */
#main-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,10,26,0.85); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; padding: 0 24px; height: 64px;
}
.nav-logo {
  font-size: 20px; font-weight: 700; color: var(--text-primary) !important;
  display: flex; align-items: center; gap: 4px; margin-right: 40px;
}
.logo-icon {
  background: var(--gradient-primary); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; font-size: 24px;
}
.nav-links { display: flex; gap: 28px; flex: 1; }
.nav-links a {
  color: var(--text-secondary); font-size: 15px; padding: 4px 0;
  border-bottom: 2px solid transparent; transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary); border-bottom-color: var(--accent-purple);
}
.nav-auth { display: flex; gap: 12px; align-items: center; }
.btn-login {
  color: var(--text-secondary) !important; font-size: 14px; padding: 6px 16px;
  border: 1px solid var(--border-color); border-radius: 20px; transition: all 0.2s;
}
.btn-login:hover { border-color: var(--accent-purple); color: var(--text-primary) !important; }
.btn-register {
  font-size: 14px; padding: 6px 16px; border-radius: 20px;
  background: var(--gradient-primary); color: #fff !important;
}
.nav-user {
  position: relative; display: flex; align-items: center; gap: 8px; cursor: pointer;
}
.nav-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--gradient-primary); display: flex; align-items: center;
  justify-content: center; font-size: 14px; font-weight: 700; color: #fff;
}
.nav-nickname { font-size: 14px; color: var(--text-secondary); }
.nav-dropdown {
  display: none; position: absolute; top: 100%; right: 0; margin-top: 8px;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); min-width: 140px; overflow: hidden;
  box-shadow: var(--shadow-card);
}
.nav-user:hover .nav-dropdown { display: block; }
.nav-dropdown a {
  display: block; padding: 10px 16px; color: var(--text-secondary) !important;
  font-size: 14px; transition: background 0.2s;
}
.nav-dropdown a:hover { background: var(--bg-card-hover); color: var(--text-primary) !important; }
.nav-mobile-toggle {
  display: none; background: none; border: none; color: var(--text-primary);
  font-size: 24px; cursor: pointer;
}

/* 通用容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.page-body { padding-top: 88px; padding-bottom: 60px; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 24px; border-radius: var(--radius-sm); font-size: 14px;
  font-weight: 500; cursor: pointer; border: none; transition: all 0.2s;
  font-family: inherit;
}
.btn-primary {
  background: var(--gradient-primary); color: #fff;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--accent-purple);
  border: 1px solid var(--accent-purple);
}
.btn-outline:hover { background: rgba(139,92,246,0.1); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 输入框 */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; }
.form-input {
  width: 100%; padding: 12px 16px; background: var(--bg-input);
  border: 1px solid var(--border-color); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 14px; font-family: inherit;
  transition: border-color 0.2s; outline: none;
}
.form-input:focus { border-color: var(--accent-purple); }
.form-input::placeholder { color: var(--text-muted); }
textarea.form-input { min-height: 120px; resize: vertical; }

/* 卡片 */
.card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 20px; transition: all 0.3s;
}
.card:hover {
  border-color: var(--border-hover); box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

/* 标签 */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 12px;
  font-size: 12px; font-weight: 500;
}
.tag-purple { background: rgba(139,92,246,0.15); color: var(--accent-purple); }
.tag-blue { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
.tag-cyan { background: rgba(6,182,212,0.15); color: var(--accent-cyan); }
.tag-green { background: rgba(16,185,129,0.15); color: var(--accent-green); }
.tag-pink { background: rgba(236,72,153,0.15); color: var(--accent-pink); }
.tag-orange { background: rgba(245,158,11,0.15); color: var(--accent-orange); }

/* 分类标签颜色映射 */
.cat-编程开发 { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
.cat-办公效率 { background: rgba(16,185,129,0.15); color: var(--accent-green); }
.cat-写作创作 { background: rgba(236,72,153,0.15); color: var(--accent-pink); }
.cat-数据分析 { background: rgba(6,182,212,0.15); color: var(--accent-cyan); }
.cat-翻译 { background: rgba(245,158,11,0.15); color: var(--accent-orange); }
.cat-Agent { background: rgba(139,92,246,0.15); color: var(--accent-purple); }
.cat-图像设计 { background: rgba(236,72,153,0.15); color: var(--accent-pink); }
.cat-其他 { background: rgba(152,152,184,0.15); color: var(--text-secondary); }

/* 模型标签 */
.model-tag {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 500; border: 1px solid;
}
.model-Claude { background: rgba(139,92,246,0.1); color: #a78bfa; border-color: rgba(139,92,246,0.3); }
.model-GPT { background: rgba(16,185,129,0.1); color: #34d399; border-color: rgba(16,185,129,0.3); }
.model-Gemini { background: rgba(59,130,246,0.1); color: #60a5fa; border-color: rgba(59,130,246,0.3); }
.model-通义千问 { background: rgba(245,158,11,0.1); color: #fbbf24; border-color: rgba(245,158,11,0.3); }
.model-DeepSeek { background: rgba(6,182,212,0.1); color: #22d3ee; border-color: rgba(6,182,212,0.3); }
.model-Kimi { background: rgba(236,72,153,0.1); color: #f472b6; border-color: rgba(236,72,153,0.3); }

/* Tab 切换 */
.tabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); }
.tab-btn {
  padding: 10px 20px; background: none; border: none; color: var(--text-secondary);
  font-size: 14px; cursor: pointer; border-bottom: 2px solid transparent;
  font-family: inherit; transition: all 0.2s;
}
.tab-btn.active { color: var(--accent-purple); border-bottom-color: var(--accent-purple); }
.tab-btn:hover { color: var(--text-primary); }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 32px; }
.page-btn {
  padding: 8px 14px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-xs); color: var(--text-secondary); cursor: pointer;
  font-size: 14px; font-family: inherit; transition: all 0.2s;
}
.page-btn.active, .page-btn:hover {
  background: var(--accent-purple); border-color: var(--accent-purple); color: #fff;
}
.page-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* 页脚 */
.site-footer {
  text-align: center; padding: 32px 0; color: var(--text-muted);
  font-size: 13px; border-top: 1px solid var(--border-color); margin-top: 60px;
}

/* 搜索框 */
.search-box {
  position: relative; max-width: 500px; width: 100%;
}
.search-box input {
  width: 100%; padding: 14px 20px 14px 44px;
  background: var(--bg-input); border: 1px solid var(--border-color);
  border-radius: 24px; color: var(--text-primary); font-size: 15px;
  outline: none; transition: border-color 0.2s; font-family: inherit;
}
.search-box input:focus { border-color: var(--accent-purple); }
.search-box input::placeholder { color: var(--text-muted); }
.search-icon {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--text-muted); font-size: 16px;
}

/* 筛选标签栏 */
.filter-bar {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px;
  overflow-x: auto; padding-bottom: 4px;
}
.filter-btn {
  padding: 6px 16px; border-radius: 20px; border: 1px solid var(--border-color);
  background: transparent; color: var(--text-secondary); font-size: 13px;
  cursor: pointer; white-space: nowrap; font-family: inherit; transition: all 0.2s;
}
.filter-btn.active, .filter-btn:hover {
  background: var(--accent-purple); border-color: var(--accent-purple); color: #fff;
}

/* 空状态 */
.empty-state {
  text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; }

/* 加载动画 */
.loading {
  text-align: center; padding: 40px; color: var(--text-muted);
}
.loading::after {
  content: ""; display: inline-block; width: 20px; height: 20px;
  border: 2px solid var(--border-color); border-top-color: var(--accent-purple);
  border-radius: 50%; animation: spin 0.8s linear infinite; margin-left: 8px;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 响应式 */
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: var(--bg-secondary); padding: 16px; gap: 12px;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.show { display: flex; }
  .nav-mobile-toggle { display: block; }
  .nav-auth { margin-right: 12px; }
  .container { padding: 0 16px; }
}