/* ─── Design tokens (Material Design 3) ─────────────────────────────────── */
:root {
  --md-primary: #1a73e8;
  --md-on-primary: #ffffff;
  --md-surface: #ffffff;
  --md-on-surface: #1c1b1f;
  --md-surface-variant: #f4f4f4;
  --md-outline: #79747e;
  --md-error: #b3261e;
  --md-on-error: #ffffff;
  --md-success: #198754;
  --md-warning: #ffc107;

  --radius-card: 16px;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-nav: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* ─── Base ───────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Roboto", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  color: var(--md-on-surface);
  background: #f0f4f9;
  min-height: 100vh;
}

/* ─── Navigation ─────────────────────────────────────────────────────────── */
.admin-nav {
  background: var(--md-surface);
  box-shadow: var(--shadow-nav);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-nav__container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 64px;
}

.admin-nav__brand {
  font-size: 20px;
  font-weight: 500;
  color: var(--md-on-surface);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-nav__brand:hover {
  color: var(--md-primary);
}

.admin-nav__links {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.admin-nav__link {
  padding: 8px 16px;
  color: var(--md-on-surface);
  text-decoration: none;
  border-radius: 8px;
  transition: background-color 0.2s;
  font-weight: 500;
}

.admin-nav__link:hover {
  background: var(--md-surface-variant);
}

.admin-nav__link--active {
  background: rgba(26, 115, 232, 0.12);
  color: var(--md-primary);
}

.admin-nav__user {
  display: flex;
  align-items: center;
  gap: 16px;
}

.admin-nav__email {
  color: var(--md-outline);
  font-size: 14px;
}

.admin-nav__locale {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 16px;
}

.admin-nav__locale-sep {
  color: var(--md-outline);
  font-size: 12px;
  user-select: none;
}

.admin-nav__locale-btn {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--md-outline);
  text-decoration: none;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color 0.15s;
}

.admin-nav__locale-btn:hover {
  color: var(--md-primary);
}

.admin-nav__locale-btn--active {
  color: var(--md-primary);
}

/* ─── Container ──────────────────────────────────────────────────────────── */
.admin-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ─── Collapsible card ───────────────────────────────────────────────────── */
.admin-collapsible {
  cursor: default;
}

.admin-collapsible__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.admin-collapsible__summary::-webkit-details-marker {
  display: none;
}

.admin-collapsible__summary::before {
  content: "▶";
  font-size: 11px;
  color: var(--md-outline);
  transition: transform 0.15s;
  flex-shrink: 0;
}

details[open] .admin-collapsible__summary::before {
  transform: rotate(90deg);
}

.admin-collapsible__body {
  margin: 16px 0 0;
  font-family: "Monaco", "Courier New", monospace;
  font-size: 12px;
  background: var(--md-surface-variant);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ─── Flash messages ─────────────────────────────────────────────────────── */
.admin-flash {
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.admin-flash--notice {
  background: #e3f2fd;
  color: #1565c0;
  border-left: 4px solid var(--md-primary);
}

.admin-flash--alert,
.admin-flash--error {
  background: #ffebee;
  color: #c62828;
  border-left: 4px solid var(--md-error);
}

.admin-flash--success {
  background: #e8f5e9;
  color: #2e7d32;
  border-left: 4px solid var(--md-success);
}

.admin-flash__icon {
  font-size: 20px;
}

/* ─── Card ───────────────────────────────────────────────────────────────── */
.admin-card {
  background: var(--md-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 24px;
}

.admin-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.admin-card__title {
  font-size: 24px;
  font-weight: 500;
  margin: 0;
  color: var(--md-on-surface);
}

.admin-card__actions {
  display: flex;
  gap: 12px;
}

/* ─── Links ─────────────────────────────────────────────────────────────── */
.admin-link {
  color: var(--md-primary);
  text-decoration: underline;
  font-size: 13px;
}

.admin-link:hover { opacity: 0.8; }

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.5;
}

.admin-btn--primary {
  background: var(--md-primary);
  color: var(--md-on-primary);
}

.admin-btn--primary:hover {
  background: #1557b0;
  box-shadow: 0 2px 4px rgba(26, 115, 232, 0.3);
}

.admin-btn--secondary {
  background: var(--md-surface-variant);
  color: var(--md-on-surface);
  border: 1px solid var(--md-outline);
}

.admin-btn--secondary:hover {
  background: #e8e8e8;
}

.admin-btn--danger {
  background: var(--md-error);
  color: var(--md-on-error);
}

.admin-btn--danger:hover {
  background: #9a1e16;
  box-shadow: 0 2px 4px rgba(179, 38, 30, 0.3);
}

.admin-btn--small {
  padding: 6px 16px;
  font-size: 13px;
}

.admin-btn--disabled {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

/* ─── Pagination ─────────────────────────────────────────────────────────── */
.admin-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--md-outline-variant);
  margin-top: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.admin-pagination__info {
  font-size: 13px;
  color: var(--md-outline);
}

.admin-pagination__controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-pagination__page {
  font-size: 13px;
  color: var(--md-on-surface);
  padding: 0 4px;
}

/* ─── Table ──────────────────────────────────────────────────────────────── */
.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--md-surface);
  border-radius: 8px;
  overflow: hidden;
}

.admin-table thead {
  background: var(--md-surface-variant);
}

.admin-table th {
  text-align: left;
  padding: 16px;
  font-weight: 500;
  color: var(--md-on-surface);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-table td {
  padding: 16px;
  border-top: 1px solid #e0e0e0;
}

.admin-table tbody tr:hover {
  background: rgba(26, 115, 232, 0.04);
}

.admin-table tbody tr:last-child td {
  border-bottom: none;
}

.admin-table__sort-link {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.admin-table__sort-link:hover {
  color: var(--md-primary);
}

/* ─── Badge ──────────────────────────────────────────────────────────────── */
.admin-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-badge--active {
  background: #e8f5e9;
  color: #2e7d32;
}

.admin-badge--inactive {
  background: #ffebee;
  color: #c62828;
}

.admin-badge--pending {
  background: #fff3e0;
  color: #ef6c00;
}

.admin-badge--revoked {
  background: #fce4ec;
  color: #c2185b;
}

/* ─── Secret banner ──────────────────────────────────────────────────────── */
.admin-secret-banner {
  background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  color: white;
  padding: 20px 24px;
  border-radius: 12px;
  margin-bottom: 24px;
  box-shadow: 0 4px 6px rgba(255, 107, 53, 0.3);
}

.admin-secret-banner__title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 12px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-secret-banner__content {
  background: rgba(255, 255, 255, 0.2);
  padding: 16px;
  border-radius: 8px;
  font-family: "Monaco", "Courier New", monospace;
  font-size: 14px;
  word-break: break-all;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.admin-secret-banner__warning {
  margin-top: 12px;
  font-size: 13px;
  opacity: 0.95;
}

/* ─── Filter form ────────────────────────────────────────────────────────── */
.admin-filter-form {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.admin-filter-form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 200px;
}

.admin-filter-form__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--md-outline);
}

.admin-filter-form__input,
.admin-filter-form__select {
  padding: 10px 12px;
  border: 1px solid var(--md-outline);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: var(--md-surface);
  color: var(--md-on-surface);
}

.admin-filter-form__input:focus,
.admin-filter-form__select:focus {
  outline: none;
  border-color: var(--md-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

/* ─── Pagination ─────────────────────────────────────────────────────────── */
.admin-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}

.admin-pagination__link {
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--md-on-surface);
  text-decoration: none;
  border: 1px solid var(--md-outline);
  background: var(--md-surface);
  transition: all 0.2s;
}

.admin-pagination__link:hover {
  background: var(--md-surface-variant);
  border-color: var(--md-primary);
}

.admin-pagination__link--active {
  background: var(--md-primary);
  color: var(--md-on-primary);
  border-color: var(--md-primary);
}

.admin-pagination__link--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ─── Form ───────────────────────────────────────────────────────────────── */
.admin-form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
}

.admin-form__label {
  font-size: 14px;
  font-weight: 500;
  color: var(--md-on-surface);
}

.admin-form__hint {
  margin: 0;
  font-size: 13px;
  color: var(--md-outline);
  line-height: 1.4;
}

.admin-form__hint code {
  font-family: "Monaco", "Courier New", monospace;
  background: var(--md-surface-variant);
  padding: 1px 5px;
  border-radius: 4px;
}

.admin-form__input {
  padding: 12px 14px;
  border: 1px solid var(--md-outline);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: var(--md-surface);
  color: var(--md-on-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.admin-form__input:focus {
  outline: none;
  border-color: var(--md-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.12);
}

.admin-form__input--error {
  border-color: var(--md-error);
}

.admin-form__input--error:focus {
  border-color: var(--md-error);
  box-shadow: 0 0 0 3px rgba(179, 38, 30, 0.12);
}

.admin-form__error {
  font-size: 13px;
  color: var(--md-error);
}

.admin-form__note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: #e8f0fe;
  border-left: 4px solid var(--md-primary);
  border-radius: 8px;
  padding: 14px 16px;
  font-size: 13px;
  color: #1a4fa0;
  line-height: 1.5;
  margin-bottom: 28px;
}

.admin-form__actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* ─── Devise auth card ───────────────────────────────────────────────────── */
.devise-card {
  max-width: 440px;
  margin: 64px auto;
  background: var(--md-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 40px 40px 32px;
}

.devise-card__header {
  text-align: center;
  margin-bottom: 32px;
}

.devise-card__logo {
  font-size: 40px;
  margin-bottom: 12px;
}

.devise-card__title {
  font-size: 24px;
  font-weight: 500;
  margin: 0 0 4px;
  color: var(--md-on-surface);
}

.devise-card__subtitle {
  margin: 0;
  font-size: 14px;
  color: var(--md-outline);
}

.devise-form__remember {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.devise-form__checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--md-primary);
  cursor: pointer;
}

.devise-form__checkbox-label {
  font-size: 14px;
  color: var(--md-on-surface);
  cursor: pointer;
}

.devise-form__submit {
  width: 100%;
  justify-content: center;
}

.devise-form__error-list {
  margin: 6px 0 0;
  padding-left: 18px;
  font-size: 13px;
}

.devise-links {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.devise-links__item a {
  font-size: 14px;
  color: var(--md-primary);
  text-decoration: none;
}

.devise-links__item a:hover {
  text-decoration: underline;
}

.devise-omniauth {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ─── Hamburger button ───────────────────────────────────────────────────── */
.admin-nav__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 20px;
  color: var(--md-on-surface);
  border-radius: 8px;
  padding: 0;
  flex-shrink: 0;
}

.admin-nav__hamburger:hover {
  background: var(--md-surface-variant);
}

.admin-nav__hamburger-icon--close {
  display: none;
}

.is-open .admin-nav__hamburger-icon--open {
  display: none;
}

.is-open .admin-nav__hamburger-icon--close {
  display: inline;
}

/* ─── Drawer ─────────────────────────────────────────────────────────────── */
.admin-nav__drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: #1c1b1f;
  z-index: 201;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  display: flex;
  flex-direction: column;
  padding: 80px 12px 24px;
  overflow-y: auto;
}

.admin-nav__drawer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}

.admin-nav__drawer-link {
  display: block;
  padding: 12px 16px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 4px;
  transition: background-color 0.15s, color 0.15s;
}

.admin-nav__drawer-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.admin-nav__drawer-link--active {
  background: rgba(26, 115, 232, 0.25);
  color: #fff;
}

.admin-nav__drawer-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.admin-nav__drawer-email {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  word-break: break-all;
}

/* ─── Overlay ────────────────────────────────────────────────────────────── */
.admin-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  /* Nav top bar */
  .admin-nav__container {
    height: 56px;
    padding: 0 16px;
  }

  .admin-nav__links,
  .admin-nav__user {
    display: none;
  }

  .admin-nav__hamburger {
    display: flex;
  }

  .is-open .admin-nav__drawer {
    transform: translateX(0);
  }

  .is-open .admin-nav__overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .admin-nav__drawer {
    padding-top: 72px;
  }

  /* Container */
  .admin-container {
    padding: 16px;
  }

  /* Tables */
  .hide-mobile {
    display: none;
  }

  .admin-table {
    font-size: 14px;
  }

  .admin-table th,
  .admin-table td {
    padding: 12px 8px;
  }

  /* Filter form */
  .admin-filter-form {
    flex-direction: column;
  }

  .admin-filter-form__group {
    width: 100%;
  }

  /* Card headers */
  .admin-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  /* Action buttons */
  .admin-card__actions {
    flex-direction: column;
    width: 100%;
  }

  .admin-card__actions .admin-btn {
    width: 100%;
    justify-content: center;
  }

  /* Secret banner credential row */
  .admin-secret-banner__content {
    flex-direction: column;
    align-items: flex-start;
  }
}