/* ============================================
   点灯蛙 UI Components
   按钮 / 卡片 / 标签 / 输入框 / 弹窗 / 进度
   ============================================ */

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm);
  padding: 12px 24px; border-radius: var(--radius-md);
  font-size: var(--text-base); font-weight: 600; line-height: 1;
  transition: all var(--transition-fast); white-space: nowrap; user-select: none;
  min-height: 44px;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary); color: var(--color-text-on-primary);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-cta {
  background: var(--color-warning); color: var(--color-text-on-primary);
  box-shadow: 0 4px 12px rgba(230, 126, 34, 0.3);
}
.btn-cta:hover { background: #D35400; }

.btn-outline {
  background: var(--color-surface); color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary-bg); }

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

.btn-lg { padding: 16px 32px; font-size: var(--text-lg); min-height: 52px; }
.btn-sm { padding: 8px 16px; font-size: var(--text-sm); min-height: 36px; }
.btn-block { width: 100%; }

/* === Cards === */
.card {
  background: var(--color-surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); padding: var(--space-lg);
}
.card-flat {
  background: var(--color-surface); border-radius: var(--radius-lg);
  border: 1px solid var(--color-border); padding: var(--space-lg);
}
.card-highlight {
  background: var(--color-surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); padding: var(--space-lg);
  border-left: 3px solid var(--color-magic);
  position: relative;
}
.card-highlight::before {
  content: "推荐"; position: absolute; top: -8px; right: var(--space-lg);
  background: var(--color-magic); color: white; font-size: var(--text-xs);
  padding: 2px 8px; border-radius: var(--radius-full); font-weight: 600;
}

/* === Tags / Badges === */
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 12px; border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 500;
}
.tag-primary { background: var(--color-primary-bg); color: var(--color-primary-dark); }
.tag-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.tag-success { background: var(--color-success-bg); color: var(--color-success); }
.tag-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.tag-magic { background: var(--color-magic-bg); color: var(--color-magic); }
.tag-accent { background: var(--color-accent-bg); color: var(--color-accent-dark); }

/* === Signal Lights === */
.signal { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }
.signal-green { background: var(--signal-green); box-shadow: 0 0 4px rgba(39, 174, 96, 0.4); }
.signal-yellow { background: var(--signal-yellow); box-shadow: 0 0 4px rgba(243, 156, 18, 0.4); }
.signal-red { background: var(--signal-red); box-shadow: 0 0 4px rgba(231, 76, 60, 0.4); }

/* === Pills (Stage Selector) === */
.pill {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 20px; border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary);
  background: var(--color-surface); border: 1.5px solid var(--color-border);
  transition: all var(--transition-fast); cursor: pointer;
}
.pill:active { transform: scale(0.96); }
.pill.active {
  background: var(--color-primary); color: white;
  border-color: var(--color-primary);
}

/* === Inputs === */
.input {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border); background: var(--color-surface);
  font-size: var(--text-base); color: var(--color-text-primary);
  transition: border-color var(--transition-fast); outline: none;
}
.input:focus { border-color: var(--color-primary); }
.input::placeholder { color: var(--color-text-tertiary); }

.textarea { resize: vertical; min-height: 80px; line-height: var(--leading-normal); }

/* === Chat Bubbles === */
.bubble {
  max-width: 80%; padding: 12px 16px; border-radius: var(--radius-lg);
  font-size: var(--text-sm); line-height: var(--leading-normal); word-break: break-word;
}
.bubble-ai {
  background: var(--color-surface); color: var(--color-text-primary);
  border-top-left-radius: var(--radius-xs);
  box-shadow: var(--shadow-xs);
}
.bubble-user {
  background: var(--color-primary); color: white;
  border-top-right-radius: var(--radius-xs);
  margin-left: auto;
}

/* === Progress / Loading === */
.progress-bar {
  width: 100%; height: 4px; background: var(--color-surface-alt);
  border-radius: var(--radius-full); overflow: hidden;
}
.progress-bar-fill {
  height: 100%; background: var(--color-primary); border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* === Bulb Progress (四步裁决进度) === */
.bulb-progress { display: flex; gap: var(--space-sm); align-items: center; }
.bulb {
  width: 24px; height: 24px; border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface); transition: all var(--transition-normal);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px;
}
.bulb.lit {
  border-color: var(--color-accent); background: var(--color-accent-bg);
  animation: bulb-glow 0.6s ease forwards;
}
.bulb .bulb-icon { opacity: 0; transition: opacity var(--transition-normal); }
.bulb.lit .bulb-icon { opacity: 1; }

/* === Tab Bar === */
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0;
  height: calc(var(--tabbar-height) + var(--safe-bottom));
  background: var(--color-surface); border-top: 1px solid var(--color-border-light);
  display: flex; z-index: 100; padding-bottom: var(--safe-bottom);
}
.tabbar-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; font-size: 10px; color: var(--color-text-tertiary); transition: color var(--transition-fast);
}
.tabbar-item.active { color: var(--color-primary); }
.tabbar-item .tab-icon { font-size: 20px; line-height: 1; }

/* === Navbar === */
.navbar {
  height: var(--nav-height); background: var(--color-primary);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--space-md); position: sticky; top: 0; z-index: 100;
  color: white;
}
.navbar-transparent {
  background: transparent; color: var(--color-text-primary);
  position: fixed; top: 0; left: 0; right: 0;
  transition: background var(--transition-normal);
}
.navbar-transparent.scrolled {
  background: var(--color-surface); color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

/* === Modal === */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 200; padding: var(--space-lg);
}
.modal {
  background: var(--color-surface); border-radius: var(--radius-lg);
  padding: var(--space-xl); max-width: 400px; width: 100%;
  box-shadow: var(--shadow-xl); animation: slideUp var(--transition-normal);
}

/* === Divider === */
.divider { height: 1px; background: var(--color-border-light); margin: var(--space-md) 0; }
.divider-text { display: flex; align-items: center; gap: var(--space-md); color: var(--color-text-tertiary); font-size: var(--text-sm); }
.divider-text::before, .divider-text::after { content: ''; flex: 1; height: 1px; background: var(--color-border-light); }

/* === Footer === */
.footer {
  background: var(--color-surface); padding: var(--space-lg) var(--space-md);
  text-align: center; font-size: var(--text-xs); color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border-light);
}
.footer-beian { display: flex; align-items: center; justify-content: center; gap: var(--space-sm); flex-wrap: wrap; }
.footer-beian a { color: var(--color-text-tertiary); }
.footer-beian a:hover { color: var(--color-primary); }
.footer-beian .divider { width: 1px; height: 12px; margin: 0; }

/* === Lock Badge (付费内容) === */
.lock-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: var(--radius-xs);
  background: var(--color-magic-bg); color: var(--color-magic);
  font-size: var(--text-xs); font-weight: 600;
}

/* === Accordion === */
.accordion-item { border-bottom: 1px solid var(--color-border-light); }
.accordion-header {
  padding: var(--space-md) 0; display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; font-weight: 500;
}

/* === Freshness Badge（数据鲜度标识） === */
.freshness-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 500; line-height: 1.4;
  white-space: nowrap;
}
.freshness-badge.fresh {
  background: var(--color-success-bg, #dcfce7);
  color: var(--color-success, #16a34a);
}
.freshness-badge.stale {
  background: var(--color-warning-bg, #fef3c7);
  color: var(--color-warning, #92400e);
}
.freshness-badge.outdated {
  background: var(--color-danger-bg, #fee2e2);
  color: var(--color-danger, #991b1b);
}
.freshness-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor; display: inline-block;
}

/* === Source Tier Tag（数据来源层级标签） === */
.source-tier-tag {
  display: inline-flex; align-items: center; gap: 3px;
  padding: 1px 7px; border-radius: 4px;
  font-size: 10px; font-weight: 600; line-height: 1.4;
}
.source-tier-tag.tier1 {
  background: #dcfce7; color: #166534;
}
.source-tier-tag.tier2 {
  background: #fef3c7; color: #92400e;
}

/* === Confidence Tag（三色置信标签） === */
.confidence-tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 600;
}
.confidence-tag .dot {
  width: 8px; height: 8px; border-radius: 50%; display: inline-block;
}
.confidence-tag.green .dot { background: #16a34a; }
.confidence-tag.yellow .dot { background: #f59e0b; }
.confidence-tag.red .dot { background: #dc2626; }
.accordion-content { padding-bottom: var(--space-md); display: none; }
.accordion-item.open .accordion-content { display: block; animation: slideDown var(--transition-fast); }

/* === Checklist === */
.checklist-item {
  display: flex; align-items: flex-start; gap: var(--space-sm);
  padding: var(--space-sm) 0; cursor: pointer;
}
.checklist-item .check-box {
  width: 20px; height: 20px; border-radius: var(--radius-xs);
  border: 2px solid var(--color-border); flex-shrink: 0; margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-fast);
}
.checklist-item.checked .check-box { background: var(--color-primary); border-color: var(--color-primary); }
.checklist-item.checked .check-text { text-decoration: line-through; color: var(--color-text-tertiary); }

/* === Empty State === */
.empty-state { text-align: center; padding: var(--space-2xl) var(--space-lg); color: var(--color-text-tertiary); }
.empty-state .empty-icon { font-size: 48px; margin-bottom: var(--space-md); opacity: 0.5; }

/* === Skeleton === */
.skeleton { background: var(--color-surface-alt); border-radius: var(--radius-sm); animation: pulse 2s infinite; }
.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-text:last-child { width: 60%; }