/* components.css
 * 按钮、卡片、导航、标签等通用组件样式
 */

/* 顶部导航栏 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.75));
  border-bottom: 1px solid rgba(233, 236, 239, 0.8);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
  transform: translateY(-2px);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  transition: height var(--transition-fast), padding var(--transition-fast);
}

.site-header.is-scrolled .navbar {
  height: 56px;
}

.navbar-brand {
  font-weight: 800;
  letter-spacing: 0.06em;
  font-size: 14px;
}

.brand-logo {
  padding: 6px 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  color: #fff;
}

.navbar-menu {
  list-style: none;
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

.nav-link {
  position: relative;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--color-text-muted);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: center;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text);
  background-color: rgba(248, 249, 250, 0.9);
}

.nav-link.is-active {
  color: #fff;
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary));
}

.nav-link.is-active::after {
  opacity: 0;
}

@media (max-width: 640px) {
  .navbar-menu {
    gap: 8px;
    font-size: 12px;
  }

  .nav-link {
    padding: 4px 8px;
  }
}

/* 按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: 0 14px 30px rgba(255, 107, 107, 0.32);
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 18px 40px rgba(255, 107, 107, 0.42);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(233, 236, 239, 0.9);
  color: var(--color-text);
}

.btn-ghost:hover {
  background: #fff;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
}

.btn-text {
  padding: 0;
  border: none;
  background: none;
  color: var(--color-secondary);
  font-size: 13px;
  cursor: default;
}

/* 卡片 */

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.card {
  position: relative;
  padding: 20px 20px 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(233, 236, 239, 0.9);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.12);
}

/* 小红书卡片特化 */
.card-xhs {
  background: linear-gradient(145deg, rgba(255, 59, 92, 0.12), rgba(255, 255, 255, 0.94));
  border: 1px solid rgba(255, 59, 92, 0.28);
  box-shadow: 0 16px 36px rgba(255, 59, 92, 0.15);
}

.card-xhs .card-badge {
  background: rgba(255, 59, 92, 0.16);
  color: #ff3b5c;
}

.card-xhs .btn-ghost {
  border-color: rgba(255, 59, 92, 0.22);
  color: #ff3b5c;
}

.card-xhs .btn-ghost:hover {
  background: rgba(255, 59, 92, 0.08);
}

.card-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(92, 124, 250, 0.08);
  color: #3b5bdb;
  margin-bottom: 10px;
}

.card-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
}

.card-description {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.card-actions {
  margin-top: 4px;
}

.card-thought.placeholder {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.03), rgba(92, 124, 250, 0.04));
}

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

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .thoughts-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 标签 */

.tag-group {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(255, 212, 59, 0.16);
  color: #e67700;
}

/* 头像 */

.about-avatar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.avatar-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--color-primary), var(--color-secondary), var(--color-accent), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.22);
}

.avatar-initial {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
}

.avatar-note {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
}

/* 时间线 */

.timeline {
  position: relative;
  margin-top: 8px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, rgba(255, 107, 107, 0.9), rgba(92, 124, 250, 0.3));
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 16px;
  padding-left: 40px;
  padding-bottom: 24px;
}

.timeline-dot {
  position: absolute;
  left: 7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--color-primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.16);
}

.timeline-content {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  padding: 12px 16px 10px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
}

.timeline-date {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.timeline-title {
  margin: 0 0 6px;
  font-size: 15px;
}

.timeline-description {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* 联系方式 */

.contact-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(233, 236, 239, 0.9);
}

.contact-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.contact-value {
  font-size: 14px;
}

.contact-value a,
.contact-value {
  color: var(--color-text);
}

/* 页脚 */

.site-footer {
  padding: 24px 0 32px;
  background: rgba(15, 23, 42, 0.94);
  color: rgba(248, 249, 250, 0.9);
  margin-top: 32px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}

.footer-note {
  color: rgba(248, 249, 250, 0.7);
}

/* 返回顶部按钮 */

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.36);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}