/* ============================================
   组件样式
   ============================================ */

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.625rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: 'DM Sans', 'PingFang SC', sans-serif;
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.5;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

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

.btn-ghost:hover {
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: var(--text-xs);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: var(--text-base);
}

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

/* ===== 卡片 ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
  border-color: var(--color-accent-muted);
}

.card-interactive {
  cursor: pointer;
}

.card-interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== 徽章/标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.625rem;
  border-radius: 9999px;
  font-size: var(--text-xs);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.badge-success {
  background: oklch(22% 0.04 160);
  color: var(--color-success);
  border: 1px solid oklch(35% 0.06 160);
}

.badge-warning {
  background: oklch(22% 0.04 70);
  color: var(--color-warning);
  border: 1px solid oklch(35% 0.06 70);
}

.badge-default {
  background: var(--color-surface-raised);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.badge-accent {
  background: oklch(20% 0.04 55);
  color: var(--color-accent);
  border: 1px solid oklch(35% 0.06 55);
}

/* ===== 输入框 ===== */
.input {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: oklch(16% 0.003 255);
  border: 1px solid oklch(28% 0.004 260);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px oklch(65% 0.12 55 / 0.25);
}

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

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.input-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-family: 'DM Sans', sans-serif;
}

.input-group .error {
  font-size: var(--text-xs);
  color: var(--color-error);
}

textarea.input {
  min-height: 120px;
  resize: vertical;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-block: var(--space-md);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb .separator {
  color: var(--color-text-muted);
  user-select: none;
}

.breadcrumb .current {
  color: var(--color-text-primary);
}

/* ===== 骨架屏 ===== */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface) 25%,
    var(--color-surface-raised) 50%,
    var(--color-surface) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-title {
  height: 1.5rem;
  width: 60%;
  margin-bottom: 1rem;
}

.skeleton-card {
  height: 200px;
}

/* ===== 信任标签条 ===== */
.trust-bar {
  display: flex;
  gap: var(--space-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-block: var(--space-md);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  scroll-snap-align: start;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-family: 'DM Sans', sans-serif;
}

.trust-item svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .trust-bar {
    overflow-x: visible;
    justify-content: center;
    gap: var(--space-xl);
  }
}