:root {
  --bg: #050816;
  --bg-card: rgba(15, 23, 42, 0.85);
  --accent: #22d3ee;
  --accent2: #7c3aed;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --danger: #f97373;
}

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

html {
  width: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 55%, #000 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0;
  padding: 0;
}

header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  width: 100%;
  box-sizing: border-box;
}

/* 文章详情页导航栏特殊样式 */
body.article-detail-page header .nav {
  max-width: 900px;
  padding: 14px 32px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 18px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
  transition: opacity 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo:hover {
  opacity: 0.8;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  flex-shrink: 1;
  min-width: 0;
}

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: var(--muted);
}

.btn {
  border-radius: 999px;
  padding: 6px 14px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.18s ease-out;
}

.btn-primary {
  background: radial-gradient(circle at 0 0, var(--accent), var(--accent2));
  color: #0f172a;
  font-weight: 600;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.6);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.9);
}

main {
  max-width: 1600px;
  margin: 24px auto 40px;
  padding: 0 24px 32px;
  flex: 1;
}

/* 文章详情页主内容区域特殊样式 */
body.article-detail-page main {
  max-width: 900px;
  margin: 32px auto 48px;
  padding: 0 32px 40px;
}

/* 知识库页面导航栏和主内容区域特殊样式 */
body.knowledge-page header .nav {
  max-width: 1200px;
  padding: 14px 32px;
}

body.knowledge-page main {
  max-width: 1200px;
  margin: 32px auto 48px;
  padding: 0 32px 40px;
}

/* 首页导航栏特殊样式 */
body.index-page header .nav {
  max-width: 1400px;
  padding: 14px 32px;
}

/* 我的文章页面导航栏和主内容区域特殊样式 */
body.my-articles-page header .nav {
  max-width: 1400px;
  padding: 14px 32px;
}

body.my-articles-page main {
  max-width: 1400px;
  margin: 32px auto 48px;
  padding: 0 32px 40px;
}

/* 创建/编辑文章页面导航栏和主内容区域特殊样式 */
body.create-edit-page header .nav {
  max-width: 1800px;
  padding: 14px 32px;
}

body.create-edit-page main {
  max-width: 1800px;
  margin: 32px auto 48px;
  padding: 0 32px 40px;
}

@media (max-width: 768px) {
  body.my-articles-page header .nav,
  body.create-edit-page header .nav,
  body.index-page header .nav {
    max-width: 100%;
    padding: 12px 20px;
  }
  
  body.my-articles-page main,
  body.create-edit-page main {
    max-width: 100%;
    padding: 0 20px 32px;
    margin: 24px auto 32px;
  }
}

@media (max-width: 480px) {
  body.my-articles-page header .nav,
  body.create-edit-page header .nav,
  body.index-page header .nav {
    max-width: 100%;
    padding: 10px 16px;
  }
  
  body.my-articles-page main,
  body.create-edit-page main {
    max-width: 100%;
    padding: 0 16px 24px;
    margin: 16px auto 24px;
  }
}

@media (max-width: 768px) {
  body.knowledge-page header .nav {
    max-width: 100%;
    padding: 12px 20px;
  }
  
  body.knowledge-page main {
    max-width: 100%;
    padding: 0 20px 32px;
    margin: 24px auto 32px;
  }
}

@media (max-width: 480px) {
  body.knowledge-page header .nav {
    max-width: 100%;
    padding: 10px 16px;
  }
  
  body.knowledge-page main {
    max-width: 100%;
    padding: 0 16px 24px;
    margin: 16px auto 24px;
  }
}

.grid {
  display: grid;
  grid-template-columns: 2fr 1.1fr;
  gap: 20px;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .nav {
    padding: 10px 16px;
  }

  .logo {
    font-size: 16px;
  }

  .nav-right {
    gap: 6px;
    font-size: 12px;
  }

  .nav-right .btn {
    padding: 6px 10px;
    font-size: 12px;
  }

  .nav-right .pill {
    font-size: 11px;
    padding: 3px 8px;
  }

  main {
    padding: 0 16px 24px;
    margin: 16px auto 32px;
  }

  .card {
    padding: 16px;
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .article-item {
    padding: 12px;
  }

  .article-title {
    font-size: 16px;
  }

  .article-meta {
    font-size: 12px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .btn {
    padding: 6px 12px;
    font-size: 13px;
  }
}

@media (max-width: 610px) {
  .nav {
    padding: 8px 12px;
    flex-wrap: wrap;
  }

  .logo {
    font-size: 15px;
  }

  .nav-right {
    gap: 4px;
    font-size: 11px;
  }

  .nav-right .btn {
    padding: 5px 8px;
    font-size: 11px;
  }

  .nav-right .pill {
    font-size: 10px;
    padding: 2px 6px;
    max-width: 90px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  .nav {
    padding: 8px 10px;
    flex-wrap: wrap;
    gap: 4px;
  }

  .logo {
    font-size: 14px;
  }

  .nav-right {
    width: 100%;
    justify-content: flex-end;
    margin-top: 4px;
    gap: 4px;
    font-size: 10px;
  }

  .nav-right .btn {
    padding: 4px 8px;
    font-size: 10px;
  }

  .nav-right .pill {
    font-size: 9px;
    padding: 2px 6px;
    max-width: 70px;
  }

  main {
    padding: 0 12px 20px;
    margin: 12px auto 24px;
  }

  .card {
    padding: 12px;
  }

  .article-item {
    padding: 10px;
  }

  .article-title {
    font-size: 14px;
  }

  .btn {
    padding: 5px 10px;
    font-size: 12px;
  }
}

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

.card {
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.9);
  padding: 18px 18px 16px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
}

.card-subtitle {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
  margin-right: 6px;
}

.status-row {
  display: flex;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
}

.article-item {
  position: relative;
  padding: 10px 10px 9px;
  border-radius: 12px;
  background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.08), transparent 55%);
  border: 1px solid rgba(148, 163, 184, 0.4);
  cursor: pointer;
  transition: all 0.16s ease-out;
}

.article-item:hover {
  transform: translateY(-1px);
  border-color: rgba(94, 234, 212, 0.7);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.9);
}

.article-title {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.article-meta {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  padding: 2px 7px;
  font-size: 11px;
  color: var(--muted);
}

.auth-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  padding: 2px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.5);
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 5px 0;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  color: var(--muted);
}

.auth-tab.active {
  background: radial-gradient(circle at 0 0, var(--accent), var(--accent2));
  color: #020617;
  font-weight: 600;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.field label {
  font-size: 12px;
  color: var(--muted);
}

.field input,
.field textarea {
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.7);
  padding: 7px 9px;
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s ease-out, box-shadow 0.15s ease-out;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.45);
}

.hint {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

.error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}

.success {
  font-size: 12px;
  color: #4ade80;
  margin-top: 4px;
}

.section-title {
  font-size: 13px;
  font-weight: 500;
  margin: 10px 0 4px;
  color: var(--muted);
}

.articles-empty {
  font-size: 12px;
  color: var(--muted);
  padding: 10px 0;
}

.pill-sm {
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  color: var(--muted);
}

.text-right {
  text-align: right;
}

footer {
  padding: 12px 18px 18px;
  font-size: 11px;
  color: var(--muted);
  text-align: center;
}

/* 透明提示框样式 */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  min-width: 280px;
  max-width: 400px;
  padding: 12px 16px;
  border-radius: 12px;
  backdrop-filter: blur(20px);
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast.hide {
  opacity: 0;
  transform: translateY(-20px);
}

.toast.success {
  border-left: 3px solid #4ade80;
}

.toast.error {
  border-left: 3px solid var(--danger);
}

.toast-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
  line-height: 1.4;
}