/* ============================================================
 * components.css — 按钮 / 卡片 / 弹层 / Toast / Tab 栏 / 页头
 * ==========================================================*/

/* ---- 页头 ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 2px 14px;
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.header-actions {
  display: flex;
  gap: 8px;
}

/* 圆形图标按钮 */
.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: color 0.2s, border-color 0.2s, transform 0.1s;
}

.icon-btn:active { transform: scale(0.92); color: var(--accent); }

/* ---- 卡片 ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 4px 20px var(--shadow);
}

.card + .card { margin-top: 12px; }

.section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin: 22px 4px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: transform 0.1s, background-color 0.2s, opacity 0.2s;
  user-select: none;
}

.btn:active { transform: scale(0.96); }

.btn:focus-visible, .icon-btn:focus-visible, .tab-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.btn-primary:active { background: var(--accent-press); }

.btn-ghost {
  background: var(--bg-card);
  color: var(--text);
  border-color: var(--border);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.btn-block { width: 100%; }

.btn[disabled] {
  opacity: 0.45;
  pointer-events: none;
}

.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---- 徽章 / 计数芯片 ---- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--accent);
}

.chip-neutral {
  background: var(--bg);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

/* ---- 底部 Tab 栏 ---- */
#tabbar {
  display: flex;
  background: var(--tabbar-bg);
  border-top: 1px solid var(--border);
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
  position: sticky;
  bottom: 0;
  z-index: 20;
}

.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 0 4px;
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.tab-item .icon {
  width: 24px;
  height: 24px;
  padding: 5px;
  box-sizing: content-box;
  border-radius: 12px;
  transition: background-color 0.2s, transform 0.2s;
}

.tab-item.active { color: var(--accent); font-weight: 600; }

.tab-item.active .icon {
  background: var(--accent-soft);
  transform: translateY(-1px);
}

/* ---- 弹层（Modal） ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 32px;
  animation: fade-in 0.18s ease;
}

.modal-overlay.closing { animation: fade-out 0.15s ease forwards; }

@keyframes fade-in { from { opacity: 0; } }
@keyframes fade-out { to { opacity: 0; } }

.modal {
  width: 100%;
  max-width: 340px;
  background: var(--bg-card);
  border-radius: 16px;
  padding: 26px 22px 20px;
  text-align: center;
  animation: pop-in 0.22s cubic-bezier(0.2, 1.4, 0.4, 1);
  border: 1px solid var(--border);
}

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.86); }
  to   { opacity: 1; transform: scale(1); }
}

.modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.modal-body {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 20px;
  line-height: 1.7;
  word-break: break-word;
}

.modal-actions {
  display: flex;
  gap: 10px;
}

.modal-actions .btn { flex: 1; }

/* ---- Toast ---- */
#toast-root {
  position: fixed;
  left: 50%;
  bottom: 96px;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  max-width: 90vw;
}

.toast {
  background: var(--text);
  color: var(--bg);
  font-size: 13px;
  padding: 10px 18px;
  border-radius: 999px;
  box-shadow: 0 4px 16px var(--shadow);
  animation: toast-in 0.22s ease;
  max-width: 100%;
  text-align: center;
}

.toast.leaving { animation: toast-out 0.2s ease forwards; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(10px); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateY(8px); }
}

/* ---- 空状态 ---- */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-dim);
}

.empty-state .icon {
  width: 48px;
  height: 48px;
  opacity: 0.35;
  margin-bottom: 12px;
}

.empty-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.empty-desc { font-size: 13px; margin-bottom: 18px; }

/* ---- 礼花画布 ---- */
#confetti-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 150;
  display: none;
}

#confetti-canvas.on { display: block; }

/* ---- 列表通用 ---- */
.list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.list-item + .list-item { margin-top: 10px; }

.item-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.item-main { flex: 1; min-width: 0; }
.item-title { font-size: 15px; font-weight: 600; }
.item-sub { font-size: 12px; color: var(--text-dim); margin-top: 2px; }

.tag {
  display: inline-block;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-right: 4px;
  font-weight: 600;
}

.tag-neutral {
  background: var(--bg);
  color: var(--text-dim);
  border: 1px solid var(--border);
}