/* ==========================================================================
   AtlasKeys — Modals, drawers, toasts, skeletons, empty/media placeholders
   ========================================================================== */

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-backdrop);
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: rgba(5, 5, 10, 0.62);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-base) var(--ease), visibility var(--t-base);
}
.modal-backdrop.is-open { opacity: 1; visibility: visible; }

.modal {
  width: 100%;
  max-width: 480px;
  max-height: min(86vh, 720px);
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-modal);
  transform: translateY(16px) scale(0.98);
  opacity: 0;
  transition: transform var(--t-slow) var(--ease-out), opacity var(--t-base) var(--ease);
}
.modal-backdrop.is-open .modal { transform: translateY(0) scale(1); opacity: 1; }
.modal--lg { max-width: 720px; }
.modal--sm { max-width: 380px; }

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.modal__title { font-size: var(--fs-xl); }
.modal__body { padding: var(--space-6); }
.modal__footer {
  display: flex; justify-content: flex-end; gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border);
}
.modal__close {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--t-base) var(--ease), background var(--t-base) var(--ease);
}
.modal__close:hover { color: var(--color-text); background: var(--color-surface-2); }

/* ---------- Toasts (rendered by shared/alerts.js) ---------- */
.toast-region {
  position: fixed;
  top: calc(var(--nav-h) + var(--space-4));
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: min(92vw, 360px);
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-strong);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  transform: translateX(120%);
  opacity: 0;
  transition: transform var(--t-slow) var(--ease-out), opacity var(--t-base) var(--ease);
}
.toast.is-visible { transform: translateX(0); opacity: 1; }
.toast.is-leaving { transform: translateX(120%); opacity: 0; }
.toast--success { border-left-color: var(--color-success); }
.toast--error   { border-left-color: var(--color-danger); }
.toast--warning { border-left-color: var(--color-warning); }
.toast--info    { border-left-color: var(--color-info); }
.toast__icon { flex: none; width: 20px; height: 20px; margin-top: 1px; }
.toast--success .toast__icon { color: var(--color-success); }
.toast--error   .toast__icon { color: var(--color-danger); }
.toast--warning .toast__icon { color: var(--color-warning); }
.toast--info    .toast__icon { color: var(--color-info); }
.toast__body { flex: 1; }
.toast__title { font-weight: var(--fw-semibold); font-size: var(--fs-sm); }
.toast__msg { font-size: var(--fs-sm); color: var(--color-text-muted); }
.toast__close { flex: none; color: var(--color-text-dim); width: 20px; height: 20px; }
.toast__close:hover { color: var(--color-text); }

/* ---------- Skeleton loaders ---------- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-2);
  border-radius: var(--radius-sm);
}
.skeleton::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
  transform: translateX(-100%);
  animation: skeleton-shimmer 1.4s infinite;
}
@keyframes skeleton-shimmer { 100% { transform: translateX(100%); } }
@media (prefers-reduced-motion: reduce) {
  .skeleton::after { animation: none; }
}

/* ---------- Media / image placeholders (empty slots by design) ---------- */
.media {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 3 / 4;
  background:
    linear-gradient(135deg, rgba(124,58,237,0.10), rgba(56,189,248,0.05)),
    var(--color-surface-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  color: var(--color-text-dim);
}
.media::before {
  /* subtle grid texture so empty slots look intentional, not broken */
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.35;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 50%, #000, transparent);
          mask-image: radial-gradient(70% 70% at 50% 50%, #000, transparent);
}
.media svg { width: 34px; height: 34px; position: relative; opacity: 0.5; }
.media--wide   { aspect-ratio: 16 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--banner { aspect-ratio: 21 / 9; }
.media img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Generic empty state ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-muted);
}
.empty-state__icon {
  display: grid; place-items: center;
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
  color: var(--color-primary-300);
}
.empty-state__icon svg { width: 30px; height: 30px; }
.empty-state h3 { color: var(--color-text); }

/* Lock body scroll when an overlay is open */
body.is-locked { overflow: hidden; }