/* Bootstrap Alert Base Styles */
.alert {
  position: relative;
  padding: 16px;
  margin-bottom: 1rem;
}

.alert span {
  font-size: var(--font-size-body-default);
  font-style: normal;
  color: inherit;
  mix-blend-mode: normal;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
  font-family: var(--font-family-body);
}

.alert p {
  color: inherit;
  margin: 8px 0 0;
}

.alert hr {
  border: 0;
  border-top: 1px solid currentColor;
  opacity: 0.24;
  margin: 12px 0;
}

.alert > :first-child {
  margin-top: 0;
}

.alert > :last-child {
  margin-bottom: 0;
}

.alert-dismissible {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.alert.show {
  display: block !important;
}

.alert.alert-dismissible.show {
  display: flex !important;
}

.alert::before {
  content: "";
  z-index: -1;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--white);
  opacity: 0.9;
}

/* Alert Heading */
.alert-heading {
  color: inherit;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.alert-multiline span,
.alert-multiline p {
  color: inherit;
  mix-blend-mode: normal;
}

.alert.alert-multiline hr {
  border-top-color: currentColor;
  opacity: 0.24;
}

/* Alert Links */
.alert-link {
  font-weight: 600;
  text-decoration: underline;
}

/* Close Button */
.btn-close {
  -webkit-mask: url("/static/css/icons/close_alert.svg") no-repeat center / contain;
  mask: url("/static/css/icons/close_alert.svg") no-repeat center / contain;
  background-color: var(--text-primary);
  border: none;
  padding: 0;
  width: 16px;
  height: 16px;
  font-size: 0;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.15s ease-in-out;
}

.btn-close:hover {
  color: var(--text-primary);
  text-decoration: none;
  opacity: 0.75;
}

.btn-close:focus {
  outline: 0;
  box-shadow: 0 0 0 0.25rem var(--shadow-focus);
  opacity: 1;
}

.btn-close:disabled,
.btn-close.disabled {
  pointer-events: none;
  user-select: none;
  opacity: 0.25;
}

/* Alternative text-based close button */
.btn-close-text {
  background: none;
  border: none;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
  opacity: 0.5;
  cursor: pointer;
  padding: 0;
  transition: opacity 0.15s ease-in-out;
}

.btn-close-text::before {
  content: "×";
}

.btn-close-text:hover {
  opacity: 0.75;
}

/* Success Alert */
.alert-success {
  color: var(--success-green-dark);
  background: linear-gradient(0deg,
      var(--success-green-transparent) 0%,
      var(--success-green-transparent) 100%),
    var(--card-fill);
  border-top: 1px solid var(--brand-green);
  border-right: 1px solid var(--brand-green);
  border-bottom: 1px solid var(--brand-green);
  border-left: 4px solid var(--brand-green);
}

.alert-success .btn-close { background-color: var(--success-green-dark); }

.alert-success .alert-link {
  color: var(--success-green-dark);
}

/* Danger/Error Alert */
.alert-danger {
  color: var(--red-dark);
  border-top: 1px solid var(--signal-red);
  border-right: 1px solid var(--signal-red);
  border-bottom: 1px solid var(--signal-red);
  background: linear-gradient(0deg,
      var(--red-transparent) 0%,
      var(--red-transparent) 100%),
    var(--card-fill);
  border-left: 4px solid var(--signal-red);
}

.alert-danger .btn-close { background-color: var(--red-dark); }

.alert-danger .alert-link {
  color: var(--red-dark);
}

/* Warning Alert */
.alert-warning {
  color: var(--orange-dark);
  border-top: 1px solid var(--signal-orange);
  border-right: 1px solid var(--signal-orange);
  border-bottom: 1px solid var(--signal-orange);
  background: linear-gradient(0deg,
      var(--orange-transparent) 0%,
      var(--orange-transparent) 100%),
    var(--card-fill);
  border-left: 4px solid var(--signal-orange);
}

.alert-warning .btn-close { background-color: var(--orange-dark); }

.alert-warning .alert-link {
  color: var(--orange-dark);
}

/* Info Alert */
.alert-info {
  color: var(--grey-dark);
  border-top: 1px solid var(--grey-main);
  border-right: 1px solid var(--grey-main);
  border-bottom: 1px solid var(--grey-main);
  background: linear-gradient(0deg,
      var(--grey-transparent) 0%,
      var(--grey-transparent) 100%),
    var(--card-fill);
  border-left: 4px solid var(--grey-main);
}

.alert-info .btn-close { background-color: var(--grey-dark); }

.alert-info .alert-link {
  color: var(--grey-dark);
}

/* Primary Alert */
.alert-primary {
  color: var(--info-blue-dark);
  border-top: 1px solid var(--brand-blue);
  border-right: 1px solid var(--brand-blue);
  border-bottom: 1px solid var(--brand-blue);
  background: linear-gradient(0deg,
      var(--info-blue-transparent) 0%,
      var(--info-blue-transparent) 100%),
    var(--card-fill);
  border-left: 4px solid var(--brand-blue);
}

.alert-primary .btn-close { background-color: var(--info-blue-dark); }

.alert-primary .alert-link {
  color: var(--info-blue-dark);
}

/* Secondary Alert */
.alert-secondary {
  color: var(--text-medium-emphasis);
  background-color: var(--surface-field-passive);
  border-color: var(--card-stroke);
}

.alert-secondary .alert-link {
  color: var(--text-high-emphasis);
}

/* Light Alert */
.alert-light {
  color: var(--text-primary);
  background-color: var(--white);
  border-color: var(--card-stroke);
}

.alert-light .alert-link {
  color: var(--text-medium-emphasis);
}

/* Dark Alert */
.alert-dark {
  color: var(--text-primary);
  background-color: var(--surface-field-passive);
  border-color: var(--card-stroke);
}

.alert-dark .alert-link {
  color: var(--text-high-emphasis);
}

/* Alert action button — small button, colored per alert variant */
.alert-btn {
  border: none;
  border-radius: 4px;
  padding: 4px 12px;
  font-size: var(--font-size-body-small);
  font-family: var(--font-family-body);
  font-weight: 500;
  line-height: 1.5;
  color: var(--white);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.alert-btn > span {
  color: var(--white) !important;
  mix-blend-mode: normal !important;
}

.alert-btn:hover {
  opacity: 0.85;
}

.alert-warning .alert-btn { background-color: var(--orange-dark); }
.alert-danger .alert-btn { background-color: var(--red-dark); }
.alert-success .alert-btn { background-color: var(--success-green-dark); }
.alert-info .alert-btn { background-color: var(--grey-dark); }
.alert-primary .alert-btn { background-color: var(--info-blue-dark); }

/* Flush variant — no border-radius, for full-width page banners */
.alert-flush { border-radius: 0; width: 100%; }

/* Show/Hide Classes */
.show {
  display: block !important;
}

.hide {
  display: none !important;
}

/* Animation Classes */
.fade {
  transition: opacity 0.15s linear;
}

.fade:not(.show) {
  opacity: 0;
}

/* Alert with Icons */
.alert i,
.alert .fas,
.alert .far,
.alert .fab {
  color: inherit;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.alert-heading i,
.alert-heading .fas,
.alert-heading .far,
.alert-heading .fab {
  margin-right: 0;
}

/* Responsive adjustments */
@media (max-width: 1023px) {
  .alert {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }

  .alert-dismissible {
    padding-right: 2.5rem;
  }

  .alert-dismissible .btn-close {
    padding: 0.625rem 1rem;
  }
}