/* Shared public-access components. The catalogue and auth routes use the same classes. */
.design-system {
  --ds-auth-page: color-mix(in srgb, var(--ds-brand-graphite) 4%, var(--ds-neutral-100));
  --ds-auth-halo: color-mix(in srgb, var(--ds-accent) 17%, transparent);
  --ds-auth-card-shadow: 0 24px 72px rgba(26, 33, 36, 0.13);
  --ds-auth-provider-vk: #2787f5;
  --ds-auth-provider-yandex: #fc3f1d;
}

.design-system[data-ds-theme='dark'] {
  --ds-auth-page: #13191c;
  --ds-auth-halo: color-mix(in srgb, var(--ds-accent) 12%, transparent);
  --ds-auth-card-shadow: 0 28px 84px rgba(0, 0, 0, 0.36);
}

.design-system .ds-brand-lockup {
  position: relative;
  display: inline-block;
  width: 148px;
  height: 42px;
  flex: none;
}

.design-system .ds-brand-lockup img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
}

.design-system .ds-brand-lockup__inverse {
  opacity: 0;
}

.design-system[data-ds-theme='dark'] .ds-brand-lockup__primary {
  opacity: 0;
}

.design-system[data-ds-theme='dark'] .ds-brand-lockup__inverse {
  opacity: 1;
}

.design-system .ds-auth-stage {
  position: relative;
  isolation: isolate;
  min-height: 620px;
  display: grid;
  place-items: center;
  padding: 48px 28px;
  overflow: hidden;
  border-radius: 18px;
  color: var(--ds-text);
  background:
    radial-gradient(circle at 18% 16%, var(--ds-auth-halo), transparent 34%),
    radial-gradient(circle at 88% 84%, color-mix(in srgb, var(--ds-brand-yellow) 8%, transparent), transparent 29%),
    var(--ds-auth-page);
}

.design-system .ds-auth-stage::before,
.design-system .ds-auth-stage::after {
  content: '';
  position: absolute;
  z-index: -1;
  border-radius: 999px;
  pointer-events: none;
}

.design-system .ds-auth-stage::before {
  width: 260px;
  height: 260px;
  top: -170px;
  right: -90px;
  border: 46px solid color-mix(in srgb, var(--ds-accent) 8%, transparent);
}

.design-system .ds-auth-stage::after {
  width: 180px;
  height: 180px;
  bottom: -126px;
  left: -60px;
  border: 34px solid color-mix(in srgb, var(--ds-brand-yellow) 8%, transparent);
}

.design-system .ds-auth-shell {
  width: min(100%, 460px);
  display: grid;
  justify-items: center;
  gap: 22px;
}

.design-system .ds-auth-card {
  width: 100%;
  padding: 30px;
  border: 0;
  border-radius: 18px;
  background: var(--ds-surface);
  box-shadow: var(--ds-auth-card-shadow);
}

.design-system .ds-auth-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 22px;
  text-align: center;
}

.design-system .ds-auth-heading :is(h1, h2, h3, h4),
.design-system .ds-auth-step-heading :is(h1, h2, h3, h4) {
  margin: 0;
  color: var(--ds-text);
  font:
    600 22px/28px 'ZCOURSE Segoe UI',
    'Segoe UI',
    sans-serif;
  letter-spacing: -0.3px;
}

.design-system .ds-auth-heading p,
.design-system .ds-auth-step-heading p {
  margin: 0;
  color: var(--ds-muted);
  font: var(--type-ui-dense);
}

.design-system .ds-auth-mode-switch {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 0;
  border-radius: 12px;
  background: var(--ds-surface-soft);
}

.design-system .ds-auth-mode-switch button {
  min-width: 0;
  min-height: 40px;
  padding: 8px 12px;
  border: 0;
  border-radius: 9px;
  color: var(--ds-muted);
  background: transparent;
  cursor: pointer;
  font: var(--type-ui-label);
  transition:
    color 150ms ease,
    background-color 150ms ease,
    box-shadow 150ms ease;
}

.design-system .ds-auth-mode-switch button:hover {
  color: var(--ds-text);
  background: color-mix(in srgb, var(--ds-surface) 65%, transparent);
}

.design-system .ds-auth-mode-switch button[aria-selected='true'] {
  color: var(--ds-text);
  background: var(--ds-surface);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--ds-text) 8%, transparent);
}

.design-system .ds-auth-form {
  display: grid;
  gap: 17px;
  margin-top: 22px;
}

.design-system .ds-auth-field {
  min-width: 0;
  display: grid;
  gap: 7px;
}

.design-system .ds-auth-field-row {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.design-system .ds-auth-field > label,
.design-system .ds-auth-field__label {
  color: var(--ds-text);
  font: var(--type-ui-label);
}

.design-system .ds-auth-field__meta {
  color: var(--ds-muted);
  font: var(--type-ui-meta);
}

.design-system .ds-auth-field__message {
  margin: 0;
  color: var(--ds-muted);
  font: var(--type-ui-meta);
}

.design-system .ds-auth-field--error .ds-auth-field__message {
  color: var(--ds-danger);
}

.design-system .ds-auth-field--success .ds-auth-field__message {
  color: var(--ds-success);
}

.design-system .ds-auth-control {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--ds-control-border);
  border-radius: 12px;
  color: var(--ds-text);
  background: var(--ds-surface-raised);
  transition:
    border-color 140ms ease,
    background-color 140ms ease;
}

.design-system .ds-auth-control:hover {
  border-color: color-mix(in srgb, var(--ds-control-border) 55%, var(--ds-text));
}

.design-system .ds-auth-control:focus-within {
  border-color: var(--ds-accent-strong);
  background: color-mix(in srgb, var(--ds-accent) 4%, var(--ds-surface-raised));
  outline: 0;
  box-shadow: none;
}

.design-system .ds-auth-control input {
  width: 100%;
  min-width: 0;
  height: 46px;
  padding: 0 14px;
  border: 0;
  outline: 0;
  color: var(--ds-text);
  background: transparent;
  font: var(--type-ui-input);
}

.design-system .ds-auth-control input::placeholder {
  color: color-mix(in srgb, var(--ds-muted) 74%, transparent);
}

.design-system .ds-auth-control input:focus,
.design-system .ds-auth-control input:focus-visible {
  border: 0;
  outline: 0;
  box-shadow: none;
}

.design-system .ds-auth-control__action {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  flex: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 10px;
  color: var(--ds-muted);
  background: transparent;
  cursor: pointer;
}

.design-system .ds-auth-control__action:hover {
  color: var(--ds-text);
  background: var(--ds-surface-soft);
}

.design-system .ds-auth-control__action svg {
  width: 20px;
  height: 20px;
}

.design-system .ds-auth-field--error .ds-auth-control {
  border-color: var(--ds-danger);
  background: color-mix(in srgb, var(--ds-danger-soft) 55%, var(--ds-surface-raised));
}

.design-system .ds-auth-field--success .ds-auth-control {
  border-color: var(--ds-success);
}

.design-system .ds-auth-link-row {
  display: flex;
  justify-content: flex-end;
  margin-top: -7px;
}

.design-system .ds-auth-link {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 3px 0;
  border: 0;
  color: var(--ds-accent-strong);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  text-underline-offset: 3px;
  font: var(--type-ui-label);
}

.design-system .ds-auth-link:hover {
  text-decoration: underline;
}

.design-system .ds-auth-submit {
  width: 100%;
}

.design-system .ds-auth-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
  color: var(--ds-muted);
  font: var(--type-ui-meta);
}

.design-system .ds-auth-divider::before,
.design-system .ds-auth-divider::after {
  content: '';
  height: 1px;
  background: var(--ds-border);
}

.design-system .ds-auth-providers {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.design-system .ds-auth-provider {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--ds-border);
  border-radius: 12px;
  color: var(--ds-text);
  background: var(--ds-surface-raised);
  cursor: pointer;
  font: var(--type-ui-label);
}

.design-system .ds-auth-provider:hover {
  border-color: var(--ds-control-border);
  background: var(--ds-surface-soft);
}

.design-system .ds-auth-provider-slot {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  flex: 0 0 48px;
  overflow: hidden;
  border-radius: 12px;
}

.design-system .ds-auth-provider-slot > iframe,
.design-system .ds-auth-provider-slot > button,
.design-system .ds-auth-provider-slot > div {
  width: 48px !important;
  max-width: 48px !important;
  height: 48px !important;
  min-height: 48px !important;
}

.design-system .ds-auth-provider__mark {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  flex: none;
  border-radius: 7px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.design-system .ds-auth-provider--vk .ds-auth-provider__mark {
  background: var(--ds-auth-provider-vk);
}

.design-system .ds-auth-provider--yandex .ds-auth-provider__mark {
  color: var(--ds-auth-provider-yandex);
  background: #fff;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ds-auth-provider-yandex) 16%, transparent);
}

.design-system .ds-auth-code-flow {
  display: grid;
  gap: 18px;
}

.design-system .ds-auth-code-send {
  width: 100%;
}

.design-system .ds-auth-code-entry {
  display: grid;
  gap: 8px;
  padding: 16px;
  border-radius: 14px;
  background: var(--ds-surface-soft);
}

.design-system .ds-auth-code-entry[hidden] {
  display: none;
}

.design-system .ds-auth-legal {
  margin: 0;
  color: var(--ds-muted);
  text-align: center;
  font: var(--type-ui-meta);
}

.design-system .ds-auth-legal a,
.design-system .ds-auth-consent a {
  color: var(--ds-accent-strong);
  text-underline-offset: 3px;
}

.design-system .ds-auth-otp-group {
  display: grid;
  gap: 10px;
}

.design-system .ds-auth-otp {
  width: min(100%, 330px);
  display: grid;
  grid-template-columns: repeat(6, minmax(38px, 1fr));
  gap: 8px;
}

.design-system .ds-auth-otp input {
  width: 100%;
  min-width: 0;
  height: 50px;
  padding: 0;
  border: 1px solid var(--ds-control-border);
  border-radius: 11px;
  color: var(--ds-text);
  background: var(--ds-surface-raised);
  text-align: center;
  font:
    600 19px/24px 'ZCOURSE Segoe UI',
    'Segoe UI',
    sans-serif;
}

.design-system .ds-auth-otp input:focus,
.design-system .ds-auth-otp input:focus-visible {
  border-color: var(--ds-accent-strong);
  outline: 0;
  background: color-mix(in srgb, var(--ds-accent) 4%, var(--ds-surface-raised));
  box-shadow: none;
}

.design-system .ds-auth-otp[data-state='error'] input {
  border-color: var(--ds-danger);
  background: color-mix(in srgb, var(--ds-danger-soft) 55%, var(--ds-surface-raised));
}

.design-system .ds-auth-otp[data-state='success'] input {
  border-color: var(--ds-success);
  background: color-mix(in srgb, var(--ds-success-soft) 55%, var(--ds-surface-raised));
}

.design-system .ds-auth-otp-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
}

.design-system .ds-auth-otp-status {
  margin: 0;
  color: var(--ds-muted);
  font: var(--type-ui-meta);
}

.design-system .ds-auth-consents {
  display: grid;
  gap: 13px;
}

.design-system .ds-auth-consent {
  min-width: 0;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: var(--ds-muted);
  cursor: pointer;
  font: var(--type-ui-meta);
}

.design-system .ds-auth-consent input {
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
}

.design-system .ds-auth-consent strong {
  display: block;
  margin-bottom: 2px;
  color: var(--ds-text);
  font: var(--type-ui-label);
}

.design-system .ds-auth-step-heading {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.design-system .ds-auth-back {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 10px;
  color: var(--ds-muted);
  background: var(--ds-surface-soft);
  cursor: pointer;
}

.design-system .ds-auth-back:hover {
  color: var(--ds-text);
}

.design-system .ds-auth-back svg {
  width: 19px;
  height: 19px;
}

.design-system .ds-auth-step-heading__copy {
  display: grid;
  gap: 5px;
}

.design-system .ds-auth-step-heading__meta {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--ds-muted);
  background: var(--ds-surface-soft);
  white-space: nowrap;
  font: var(--type-ui-meta);
}

.design-system .ds-auth-notice {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 13px 14px;
  border: 0;
  border-radius: 12px;
  color: var(--ds-info);
  background: var(--ds-info-soft);
  font: var(--type-ui-dense);
}

.design-system .ds-auth-notice svg {
  width: 20px;
  height: 20px;
}

.design-system .ds-auth-notice--error {
  color: var(--ds-danger);
  background: var(--ds-danger-soft);
}

.design-system .ds-auth-notice--warning {
  color: var(--ds-warning);
  background: var(--ds-warning-soft);
}

.design-system .ds-auth-notice--success {
  color: var(--ds-success);
  background: var(--ds-success-soft);
}

.design-system .ds-auth-state-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.design-system .ds-auth-feedback-field {
  margin-top: 16px;
}

.design-system .ds-auth-submit-states {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.design-system .ds-auth-submit-states > div {
  min-width: 0;
  display: grid;
  gap: 7px;
}

.design-system .ds-auth-submit-states > div > span {
  color: var(--ds-muted);
  font: var(--type-ui-meta);
}

.design-system .ds-auth-brand-preview {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  border-radius: 14px;
  background: var(--ds-surface-soft);
}

.design-system .ds-auth-brand-preview--inverse {
  background: var(--ds-brand-graphite);
}

.design-system .ds-auth-brand-preview--inverse .ds-brand-lockup__primary {
  opacity: 0;
}

.design-system .ds-auth-brand-preview--inverse .ds-brand-lockup__inverse {
  opacity: 1;
}

.design-system .ds-auth-popover {
  padding: 7px;
  border: 0;
  border-radius: 12px;
  color: var(--ds-text);
  background: var(--ds-surface-raised);
  box-shadow: var(--ds-shadow);
}

@media (max-width: 720px) {
  .design-system .ds-auth-stage {
    min-height: 560px;
    padding: 32px 16px;
    border-radius: 14px;
  }

  .design-system .ds-auth-card {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .design-system .ds-auth-state-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .design-system .ds-auth-field-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .design-system .ds-auth-submit-states {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 420px) {
  .design-system .ds-auth-stage {
    min-height: 100dvh;
    margin-inline: -16px;
    padding: max(24px, env(safe-area-inset-top)) 16px max(24px, env(safe-area-inset-bottom));
    border-radius: 0;
  }

  .design-system .ds-auth-stage .ds-auth-card {
    padding: 0;
    background: transparent;
    box-shadow: none;
  }

  .design-system .ds-auth-providers {
    grid-template-columns: minmax(0, 1fr);
  }

  .design-system .ds-auth-step-heading {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .design-system .ds-auth-step-heading__meta {
    grid-column: 2;
    justify-self: start;
  }

  .design-system .ds-auth-otp {
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .design-system .ds-auth-mode-switch button,
  .design-system .ds-auth-control {
    transition: none;
  }
}