/* ==========================================================================
   PEPTIDESTX DESIGN SYSTEM — MODAL, TOAST, ALERT, TOOLTIP
   ========================================================================== */

/* ---------------------------------------------------------------------
   MODAL
   --------------------------------------------------------------------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(11, 13, 15, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-mid) var(--ease-out);
}

.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  width: 100%;
  max-width: 480px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  padding: var(--space-8);
  transform: scale(0.96) translateY(8px);
  transition: transform var(--dur-mid) var(--ease-out-expo);
}

.modal-backdrop.is-open .modal {
  transform: scale(1) translateY(0);
}

.modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.modal__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 22px;
  color: var(--color-obsidian);
}

.modal__close {
  color: var(--color-graphite-500);
  flex-shrink: 0;
  margin: -8px -8px 0 0;
}

.modal__close:hover {
  color: var(--color-obsidian);
}

.modal__body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 24px;
  color: var(--color-graphite-500);
  margin-bottom: var(--space-8);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .modal {
    padding: var(--space-6);
    max-height: calc(100vh - 32px);
  }
  .modal__footer {
    flex-direction: column-reverse;
  }
  .modal__footer .btn {
    width: 100%;
  }
}

/* ---------------------------------------------------------------------
   TOAST NOTIFICATION
   Purpose: transient confirmations (e.g. "Added to cart", "Subscribed").
   Calm, brief, never celebratory (per brand restraint principle).
   --------------------------------------------------------------------- */

.toast-region {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 360px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-obsidian);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-modal);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur-mid) var(--ease-out), transform var(--dur-mid) var(--ease-out);
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--color-verified-green);
}

.toast--error .toast__icon {
  color: var(--color-signal-red);
}

.toast__text {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-white);
  flex: 1;
}

.toast__close {
  width: 16px;
  height: 16px;
  color: var(--color-graphite-300);
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .toast-region {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
    max-width: none;
  }
}

/* ---------------------------------------------------------------------
   ALERT (inline, persistent — page/section-level notices, distinct
   from toasts which are transient and float above content)
   --------------------------------------------------------------------- */

.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  border: 1px solid;
}

.alert__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.alert__title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 2px;
}

.alert__text {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 20px;
}

.alert--info {
  background: #F1EAF7;
  border-color: rgba(var(--color-royal-violet-rgb), 0.24);
  color: var(--color-deep-violet);
}

.alert--success {
  background: var(--color-verified-green-bg);
  border-color: rgba(46, 139, 87, 0.3);
  color: var(--color-verified-green);
}

.alert--warning {
  background: #FBF1E3;
  border-color: rgba(201, 138, 44, 0.3);
  color: var(--color-alert-amber);
}

.alert--error {
  background: #FBEAE9;
  border-color: rgba(179, 38, 30, 0.3);
  color: var(--color-signal-red);
}

/* ---------------------------------------------------------------------
   TOOLTIP
   --------------------------------------------------------------------- */

.tooltip-wrap {
  position: relative;
  display: inline-flex;
}

.tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--color-obsidian);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 16px;
  padding: 6px 10px;
  border-radius: 4px;
  white-space: nowrap;
  box-shadow: var(--shadow-tooltip);
  z-index: var(--z-tooltip);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-obsidian);
}

.tooltip-wrap:hover .tooltip,
.tooltip-wrap:focus-within .tooltip,
.tooltip.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Tooltips are hidden entirely on touch devices — hover has no reliable
   equivalent on touch, and the underlying trigger should always carry
   its own accessible label rather than depending on a tooltip to explain it. */
@media (hover: none) {
  .tooltip {
    display: none;
  }
}