/* ============================================================
   通用组件：modal / toast / dropdown / skeleton / empty-state / tooltip
   ============================================================ */

/* ---- Modal ---- */
.modal-overlay {
  position: fixed; inset: 0; z-index: var(--z-modal);
  background: rgba(3, 5, 16, 0.62);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: var(--sp-5);
  opacity: 0; transition: opacity var(--t-mid) var(--ease);
}
.modal-overlay.show { opacity: 1; }
.modal {
  width: min(440px, 100%); max-height: 84vh; overflow: auto;
  border-radius: var(--r-xl); box-shadow: var(--shadow-2);
  background: var(--bg-glass-strong);
  transform: scale(0.92) translateY(12px);
  transition: transform var(--t-mid) var(--ease);
}
.modal-overlay.show .modal { transform: scale(1) translateY(0); }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--sp-4) var(--sp-5); border-bottom: 1px solid var(--line-1);
}
.modal-title { font-size: var(--fs-lg); font-weight: 600; }
.modal-body { padding: var(--sp-5); }
.modal-text { color: var(--tx-2); line-height: 1.7; }
.modal-foot {
  display: flex; justify-content: flex-end; gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5); border-top: 1px solid var(--line-1);
}
.modal-prompt { display: flex; flex-direction: column; gap: var(--sp-4); }

/* ---- Toast ---- */
.toast-wrap {
  position: fixed; top: 18px; right: 18px; z-index: var(--z-toast);
  display: flex; flex-direction: column; gap: var(--sp-2); align-items: flex-end;
  pointer-events: none;
}
.toast {
  pointer-events: auto; cursor: pointer;
  display: flex; align-items: center; gap: var(--sp-2);
  max-width: min(360px, 86vw);
  padding: 10px 16px; border-radius: var(--r-md);
  background: var(--bg-glass-strong); border: 1px solid var(--line-2);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-2); font-size: var(--fs-sm);
  transform: translateX(30px); opacity: 0;
  transition: transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}
.toast.show { transform: translateX(0); opacity: 1; }
.toast-success { border-color: rgba(52, 245, 197, 0.45); }
.toast-success .toast-i { color: var(--neon-green); }
.toast-error { border-color: rgba(255, 93, 115, 0.45); }
.toast-error .toast-i { color: var(--danger); }
.toast-info .toast-i { color: var(--neon-cyan); }

/* ---- Dropdown ---- */
.dropdown {
  position: fixed; z-index: var(--z-dropdown); min-width: 168px;
  padding: 6px; border-radius: var(--r-md);
  overflow-y: auto; overscroll-behavior: contain;
  background: var(--bg-glass-strong);
  box-shadow: var(--shadow-2);
  opacity: 0; transform: translateY(-6px) scale(0.97);
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.dropdown.show { opacity: 1; transform: translateY(0) scale(1); }
.dropdown-item {
  display: flex; align-items: center; gap: var(--sp-2);
  width: 100%; padding: 8px 10px; border-radius: var(--r-sm);
  font-size: var(--fs-sm); color: var(--tx-1); text-align: left;
  transition: background var(--t-fast);
}
.dropdown-item:hover { background: var(--bg-3); }
.dropdown-item.danger { color: var(--danger); }
.dropdown-item.danger:hover { background: rgba(255, 93, 115, 0.12); }
.dropdown-i { display: inline-flex; color: var(--tx-3); }
.dropdown-item.danger .dropdown-i { color: var(--danger); }
.dropdown-sep { height: 1px; background: var(--line-1); margin: 5px 8px; }

/* ---- Skeleton ---- */
.skeleton {
  border-radius: var(--r-md);
  background: linear-gradient(90deg, var(--bg-2) 25%, var(--bg-3) 50%, var(--bg-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}
.skeleton-line { height: 14px; margin: 8px 0; }

/* ---- Empty State ---- */
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--sp-3); padding: var(--sp-7) var(--sp-5);
  color: var(--tx-3); text-align: center;
}
.empty-art {
  width: 96px; height: 96px; border-radius: 28px;
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand-soft); border: 1px solid var(--line-1);
  box-shadow: var(--glow-violet);
  color: var(--neon-cyan);
}
.empty-art .i { width: 42px; height: 42px; }
.empty-title { font-size: var(--fs-lg); color: var(--tx-2); font-weight: 600; }
.empty-desc { font-size: var(--fs-sm); max-width: 320px; }

/* ---- Tooltip ---- */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip);
  position: absolute; left: 50%; bottom: calc(100% + 8px);
  transform: translateX(-50%) translateY(4px);
  padding: 4px 10px; border-radius: var(--r-sm);
  font-size: var(--fs-xs); white-space: nowrap;
  background: var(--bg-glass-strong); color: var(--tx-1);
  border: 1px solid var(--line-2); box-shadow: var(--shadow-1);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-fast), transform var(--t-fast) var(--ease);
  z-index: var(--z-dropdown);
}
[data-tip]:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }