/* ==========================================================================
   Shared Material 3 components.
   Used by panel, auth and public pages. Page-specific layout lives in
   panel/css/base.css (panel shell) and small per-page stylesheets.

   Legacy helper classes (.upload-box, .format-box, .search-result-item,
   .import-result, .tab-btn, .tab-panel, .modal-box__title, .radio-label,
   .radio-group, .row-actions, .group-tag, .pw-wrap, .pw-toggle, .inline-field,
   .spinner, .sep) are kept here because page-specific JS bundles generate
   HTML that references them. They are styled to match M3.
   ========================================================================== */

/* ════════════════════════════════════════════════════════════════════
   BUTTONS
   ════════════════════════════════════════════════════════════════════ */
.btn {
  --btn-bg: var(--surface-container-lowest);
  --btn-fg: var(--on-surface);
  --btn-bd: var(--outline);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: var(--btn-h);
  padding: 0 var(--space-5);
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: .9rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              box-shadow var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard),
              opacity var(--dur-fast);
  text-decoration: none;
  user-select: none;
}
.btn:hover:not(:disabled) { box-shadow: var(--elev-1); }
.btn:active:not(:disabled) { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn--filled {
  --btn-bg: var(--primary);
  --btn-fg: var(--on-primary);
  --btn-bd: transparent;
  box-shadow: var(--elev-1);
}
.btn--filled:hover:not(:disabled) { --btn-bg: var(--primary-dark); box-shadow: var(--elev-2); }

.btn--tonal {
  --btn-bg: var(--primary-container);
  --btn-fg: var(--on-primary-container);
  --btn-bd: transparent;
}
.btn--tonal:hover:not(:disabled) { --btn-bg: #D6D2FF; box-shadow: var(--elev-1); }

.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--primary);
  --btn-bd: var(--outline);
}
.btn--outline:hover:not(:disabled) { --btn-bg: var(--primary-container); }

.btn--danger {
  --btn-bg: var(--error-container);
  --btn-fg: var(--error);
  --btn-bd: transparent;
}
.btn--danger:hover:not(:disabled) { box-shadow: var(--elev-1); }

.btn--text {
  --btn-bg: transparent;
  --btn-fg: var(--primary);
  --btn-bd: transparent;
  padding: 0 var(--space-3);
}
.btn--text:hover:not(:disabled) { --btn-bg: var(--primary-container); box-shadow: none; }

.btn--sm { height: var(--btn-h-sm); padding: 0 var(--space-3); font-size: .82rem; border-radius: var(--radius-pill); }
.btn--block { width: 100%; }
.btn--icon { width: var(--btn-h); padding: 0; }
.btn--icon.btn--sm { width: var(--btn-h-sm); }

/* Legacy primary/secondary/danger aliases (kept for older JS/markup) */
.btn-primary, .btn-save { --btn-bg: var(--primary); --btn-fg: var(--on-primary); --btn-bd: transparent; box-shadow: var(--elev-1); }
.btn-primary:hover:not(:disabled), .btn-save:hover:not(:disabled) { --btn-bg: var(--primary-dark); }
.btn-secondary { --btn-bg: var(--surface-container); --btn-fg: var(--on-surface); --btn-bd: var(--outline); }
.btn-cancel { --btn-bg: var(--surface-container); --btn-fg: var(--on-surface); --btn-bd: var(--outline); }
.btn-submit { width: 100%; height: var(--btn-h); border: none; border-radius: var(--radius-pill);
  background: var(--primary); color: var(--on-primary); font-weight: 600; font-size: .95rem;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  transition: background var(--dur-fast), transform var(--dur-fast); }
.btn-submit:hover { background: var(--primary-dark); }
.btn-submit:active { transform: scale(.98); }

/* Spinner shown inside buttons */
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.35);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  display: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ════════════════════════════════════════════════════════════════════
   CARDS
   ════════════════════════════════════════════════════════════════════ */
.card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  box-shadow: var(--elev-1);
  padding: var(--space-6);
}
.card--tight { padding: var(--space-4) var(--space-5); }
.card--flat { box-shadow: none; }

.card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.card__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: .72rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--space-2);
}
.card__title { font-size: 1.15rem; font-weight: 700; color: var(--on-surface); }
.card__title-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-inline-start: 0;
  margin-inline-end: var(--space-2);
  color: var(--on-surface-variant);
  vertical-align: middle;
}
.card__eyebrow svg { flex-shrink: 0; }
.card__sub { font-size: .85rem; color: var(--on-surface-variant); margin-top: var(--space-1); }

/* Legacy alias for older markup */
.panel-card { background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg); padding: var(--space-5) var(--space-6); margin-bottom: var(--space-4); box-shadow: var(--elev-1); }
.panel-card--tight { padding: var(--space-4) var(--space-5); }
.panel-card__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-3); }
.panel-card__title { font-size: .95rem; font-weight: 700; display: flex; align-items: center; gap: var(--space-2); }
.panel-card__count { font-size: .78rem; color: var(--on-surface-variant); background: var(--surface-container);
  padding: .15rem .6rem; border-radius: var(--radius-pill); }

/* ════════════════════════════════════════════════════════════════════
   CHIPS / BADGES
   ════════════════════════════════════════════════════════════════════ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: .25rem .7rem;
  border-radius: var(--radius-pill);
  font-size: .75rem;
  font-weight: 600;
  background: var(--surface-container);
  color: var(--on-surface-variant);
  border: 1px solid var(--outline-variant);
  white-space: nowrap;
}
.chip--success { background: var(--success-container); color: var(--success); border-color: transparent; }
.chip--error   { background: var(--error-container);   color: var(--error);   border-color: transparent; }
.chip--warning { background: var(--warning-container); color: var(--warning); border-color: transparent; }
.chip--neutral { background: var(--surface-container-high); color: var(--on-surface-variant); border-color: transparent; }
.chip--role    { background: var(--primary-container); color: var(--on-primary-container); border-color: transparent; }
.chip--info    { background: var(--info-container); color: var(--info); border-color: transparent; }

/* Legacy badge aliases (older markup / JS-generated HTML) */
.badge { display: inline-flex; align-items: center; padding: .2rem .6rem; border-radius: var(--radius-pill);
  font-size: .72rem; font-weight: 600; white-space: nowrap; }
.badge--active, .badge--green, .badge-group { background: var(--success-container); color: var(--success); }
.badge--inactive, .badge--gray, .badge--cancelled, .badge--expired { background: var(--error-container); color: var(--error); }
.badge--pending { background: var(--warning-container); color: var(--warning); }
.badge-manual { background: var(--info-container); color: var(--info); }
.group-tag { display: inline-block; font-size: .72rem; background: var(--surface-container);
  color: var(--on-surface-variant); padding: .15rem .5rem; border-radius: var(--radius-xs); margin-inline-start: .25rem; }

/* ════════════════════════════════════════════════════════════════════
   ALERTS
   ════════════════════════════════════════════════════════════════════ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: .8rem 1rem;
  border-radius: var(--radius-md);
  font-size: .85rem;
  margin-bottom: var(--space-4);
  border: 1px solid transparent;
}
.alert--success { background: var(--success-container); color: var(--success); }
.alert--error, .alert--danger { background: var(--error-container); color: var(--error); }
.alert--warning { background: var(--warning-container); color: var(--warning); }
.alert--info    { background: var(--info-container); color: var(--info); }

/* Panel-scoped message variants (rendered by base.html messages loop) */
.panel-alert { display: flex; align-items: flex-start; gap: var(--space-3); padding: .8rem 1rem;
  border-radius: var(--radius-md); font-size: .85rem; margin-bottom: var(--space-3); border: 1px solid transparent; }
.panel-alert--success { background: var(--success-container); color: var(--success); }
.panel-alert--error   { background: var(--error-container); color: var(--error); }
.panel-alert--warning { background: var(--warning-container); color: var(--warning); }
.panel-alert--info    { background: var(--info-container); color: var(--info); }
.panel-alert--debug   { background: var(--surface-container-high); color: var(--on-surface-variant); }

/* Auth-page alert (older login/register expects display:none default) */
.alert.alert--error, .alert.alert--success { display: none; }
.alert.alert--error.is-visible, .alert.alert--success.is-visible { display: flex; }

/* ════════════════════════════════════════════════════════════════════
   STATS / INFO GRID
   ════════════════════════════════════════════════════════════════════ */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}
.stat {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--elev-1);
}
.stat__label { font-size: .78rem; color: var(--on-surface-variant); margin-bottom: var(--space-2); }
.stat__value { font-size: 1.4rem; font-weight: 800; color: var(--on-surface); }
.stat__icon {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-container); color: var(--on-primary-container);
  border-radius: var(--radius-md); font-size: 1.1rem; margin-bottom: var(--space-3);
}
.stat__row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }

/* Legacy info-card alias (dashboard / profile / tenant detail) */
.info-card { background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--elev-1); }
.info-card__label, .info-card__title { font-size: .74rem; color: var(--on-surface-variant);
  text-transform: uppercase; letter-spacing: .05em; margin-bottom: var(--space-2); font-weight: 600; }
.info-card__value { font-size: .95rem; font-weight: 600; color: var(--on-surface); }
.info-row { display: flex; justify-content: space-between; gap: var(--space-3); font-size: .85rem;
  padding: .4rem 0; border-bottom: 1px solid var(--outline-variant); }
.info-row:last-child { border-bottom: none; }
.info-row span:first-child { color: var(--on-surface-variant); }
.info-row span:last-child { font-weight: 600; }

/* ════════════════════════════════════════════════════════════════════
   TABLE
   ════════════════════════════════════════════════════════════════════ */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  background: var(--surface-container-lowest);
  box-shadow: var(--elev-1);
}
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: right;
  font-size: .76rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  background: var(--surface-container-low);
  padding: .8rem 1rem;
  border-bottom: 1px solid var(--outline-variant);
  white-space: nowrap;
}
tbody td {
  padding: .85rem 1rem;
  font-size: .88rem;
  border-bottom: 1px solid var(--outline-variant);
  color: var(--on-surface);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface-container-low); }
.empty-row td { text-align: center; color: var(--on-surface-faint); padding: 2.5rem 1rem; }

.cell-name { display: flex; align-items: center; gap: var(--space-3); font-weight: 600; }
.cell-name__avatar {
  width: 34px; height: 34px; border-radius: var(--radius-pill);
  background: var(--primary-container); color: var(--on-primary-container);
  display: inline-flex; align-items: center; justify-content: center; font-size: .8rem; font-weight: 700;
  overflow: hidden; flex-shrink: 0;
}
.cell-name__avatar img { width: 100%; height: 100%; object-fit: cover; }
.mono-cell { direction: ltr; text-align: right; font-family: var(--font-mono); font-size: .85rem; }

.row-actions { display: flex; gap: var(--space-1); align-items: center; }
.row-actions button, .row-actions a {
  background: none; border: none; cursor: pointer; font-size: 1rem;
  padding: .3rem .45rem; border-radius: var(--radius-xs); color: var(--on-surface-variant);
  transition: background var(--dur-fast), color var(--dur-fast);
  display: inline-flex; align-items: center; justify-content: center;
  line-height: 1;
}
.row-actions button:hover, .row-actions a:hover { background: var(--surface-container); color: var(--primary); }
.row-actions svg { display: block; }

/* Search box (used in toolbars) */
.search-box { flex: 1; min-width: 200px; position: relative; }
.search-box input, .search-box select {
  width: 100%; height: 40px; padding: 0 .9rem;
  border: 1px solid var(--outline); border-radius: var(--radius-pill);
  font-size: .88rem; font-family: inherit;
  background: var(--surface-container-lowest); color: var(--on-surface);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.search-box input:focus, .search-box select:focus {
  outline: none; border-color: var(--primary); box-shadow: var(--elev-1);
}

/* Toolbar */
.toolbar { display: flex; gap: var(--space-3); margin-bottom: var(--space-5); flex-wrap: wrap; align-items: center; }

/* ════════════════════════════════════════════════════════════════════
   EMPTY STATE
   ════════════════════════════════════════════════════════════════════ */
.empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: var(--space-12) var(--space-6);
  color: var(--on-surface-variant);
}
.empty__icon {
  width: 72px; height: 72px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-container); color: var(--on-surface-faint);
  border-radius: var(--radius-pill); font-size: 2rem; margin-bottom: var(--space-4);
}
.empty__title { font-size: 1rem; font-weight: 700; color: var(--on-surface); margin-bottom: var(--space-1); }
.empty__sub { font-size: .85rem; color: var(--on-surface-variant); margin-bottom: var(--space-5); max-width: 360px; }
.empty__actions { display: flex; gap: var(--space-3); }

/* ════════════════════════════════════════════════════════════════════
   PAGINATION
   ════════════════════════════════════════════════════════════════════ */
.pager, .pagination {
  display: flex; align-items: center; justify-content: center; gap: var(--space-3);
  margin-top: var(--space-5); font-size: .85rem; color: var(--on-surface-variant); flex-wrap: wrap;
}
.pager__info { color: var(--on-surface-variant); }
.pager a, .pagination a {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: .4rem .9rem; border-radius: var(--radius-pill);
  border: 1px solid var(--outline); color: var(--on-surface); background: var(--surface-container-lowest);
  transition: background var(--dur-fast), border-color var(--dur-fast);
}
.pager a:hover, .pagination a:hover { background: var(--primary-container); color: var(--on-primary-container); border-color: transparent; }
.pager .disabled, .pagination .disabled { opacity: .4; pointer-events: none; }

/* ════════════════════════════════════════════════════════════════════
   FIELDS
   ════════════════════════════════════════════════════════════════════ */
.field { margin-bottom: var(--space-4); }
.field label {
  display: block; font-size: .8rem; font-weight: 600;
  color: var(--on-surface-variant); margin-bottom: var(--space-2);
}
.field input[type=text],
.field input[type=password],
.field input[type=tel],
.field input[type=email],
.field input[type=number],
.field input[type=url],
.field input[type=search],
.field input[type=file],
.field select,
.field textarea {
  width: 100%;
  height: var(--input-h);
  padding: 0 var(--space-4);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  font-size: .92rem;
  font-family: inherit;
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast), background var(--dur-fast);
}
.field input[type=file] { padding: .6rem var(--space-3); height: auto; }
.field select[multiple] { height: auto; min-height: 120px; padding: .5rem; }
.field textarea { padding: .7rem var(--space-4); min-height: 96px; resize: vertical; line-height: 1.6; }
.field input::placeholder, .field textarea::placeholder { color: var(--on-surface-faint); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: var(--elev-1);
}
.field input.is-error, .field select.is-error, .field textarea.is-error { border-color: var(--error); }
.field input.is-success, .field select.is-success, .field textarea.is-success { border-color: var(--success); }
.field__err { font-size: .76rem; color: var(--error); margin-top: var(--space-1); }
.field__help { font-size: .76rem; color: var(--on-surface-faint); margin-top: var(--space-1); line-height: 1.6; }
.field--row { display: flex; align-items: center; gap: var(--space-3); }

.radio-group { display: flex; flex-direction: column; gap: var(--space-2); }
.radio-label { display: flex; align-items: center; gap: var(--space-2); font-size: .85rem; color: var(--on-surface); cursor: pointer; }
.radio-label input[type=checkbox], .radio-label input[type=radio] { width: 18px; height: 18px; accent-color: var(--primary); }

/* Password field wrapper (auth pages) */
.pw-wrap { position: relative; }
.pw-wrap input { padding-inline-start: 2.6rem; }
.pw-toggle {
  position: absolute; inset-inline-end: .7rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; color: var(--on-surface-faint);
  padding: 0; display: flex; align-items: center; line-height: 1; transition: color var(--dur-fast);
}
.pw-toggle:hover { color: var(--on-surface); }
.pw-toggle svg { width: 18px; height: 18px; }

/* Inline field (mobile + send-otp button) */
.inline-field { display: flex; gap: var(--space-2); align-items: flex-start; }
.inline-field .field { flex: 1; margin-bottom: 0; }
.btn-otp.hidden-by-tab { display: none; }
.btn-otp.hidden-by-tab.visible { display: inline-flex; }

/* ════════════════════════════════════════════════════════════════════
   SWITCH (toggle)
   ════════════════════════════════════════════════════════════════════ */
.switch-row {
  display: flex; align-items: flex-start; gap: var(--space-3);
  cursor: pointer; padding: var(--space-2) 0;
}
.switch-row__text { font-size: .88rem; color: var(--on-surface); line-height: 1.5; }
.switch-row__help { display: block; font-size: .76rem; color: var(--on-surface-faint); margin-top: .15rem; }

.switch {
  position: relative; width: 44px; height: 26px; flex-shrink: 0; margin-top: .1rem;
}
.switch input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; width: 100%; height: 100%; }
.switch-track {
  position: absolute; inset: 0; background: var(--on-surface-faint);
  border-radius: var(--radius-pill); transition: background var(--dur-med) var(--ease-standard);
  pointer-events: none;
}
.switch-track::before {
  content: ""; position: absolute; width: 18px; height: 18px;
  inset-inline-start: 4px; top: 4px; background: #fff; border-radius: 50%;
  box-shadow: 0 1px 2px rgba(0,0,0,.2);
  transition: transform var(--dur-med) var(--ease-emphasized);
}
.switch input:checked + .switch-track { background: var(--primary); }
.switch input:checked + .switch-track::before {
  /* RTL: thumb moves to the opposite side */
  transform: translateX(-18px);
}
/* In LTR contexts the thumb moves the other way */
[dir="ltr"] .switch input:checked + .switch-track::before { transform: translateX(18px); }

/* ════════════════════════════════════════════════════════════════════
   ACCORDION
   ════════════════════════════════════════════════════════════════════ */
.accordion { display: flex; flex-direction: column; gap: var(--space-3); }

.acc-item {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--elev-1);
}
.acc-header {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  font-size: .9rem; font-weight: 700; color: var(--on-surface);
  user-select: none; transition: background var(--dur-fast);
}
.acc-header:hover { background: var(--surface-container-low); }
.acc-header::-webkit-details-marker { display: none; }
.acc-header__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--on-surface-variant);
  line-height: 1;
}
.acc-header__icon svg { display: block; }
.acc-header__title { flex: 1; }
.acc-header__chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--on-surface-faint);
  transition: transform var(--dur-med);
}
.acc-header__chevron svg { display: block; }
.acc-item[open] .acc-header__chevron { transform: rotate(180deg); }
.acc-item[open] .acc-header { border-bottom: 1px solid var(--outline-variant); }

.acc-body {
  padding: var(--space-5);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4) var(--space-6);
  align-items: start;
}
.acc-body .field { grid-column: 1 / -1; margin-bottom: 0; }
.acc-body .switch-row { grid-column: span 1; }
@media (max-width: 640px) { .acc-body { grid-template-columns: 1fr; } }

/* ════════════════════════════════════════════════════════════════════
   MODAL
   ════════════════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(27, 26, 34, .5);
  backdrop-filter: blur(2px);
  display: none; align-items: center; justify-content: center;
  z-index: 100; padding: var(--space-5);
}
.modal-overlay.is-visible { display: flex; }
.modal-box {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--elev-3);
  padding: var(--space-6);
  width: 100%; max-width: 480px;
  max-height: 90vh; overflow-y: auto;
  animation: modalIn var(--dur-med) var(--ease-emphasized);
}
@keyframes modalIn { from { transform: translateY(12px) scale(.98); opacity: 0; } to { transform: none; opacity: 1; } }
.modal__title, .modal-box__title { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-5); }
.modal__actions, .modal-actions { display: flex; gap: var(--space-3); margin-top: var(--space-5); }
.modal__actions .btn, .modal-actions .btn-cancel, .modal-actions .btn-save { flex: 1; }

/* ════════════════════════════════════════════════════════════════════
   TABS (two patterns: segmented + underline)
   ════════════════════════════════════════════════════════════════════ */
/* Segmented control (auth pages) */
.tabs.segmented, .tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--surface-container);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-5);
}
@media(max-width: 480px){
  .tabs.segmented.plan-categories {
    flex-direction: column;
    border-radius: var(--radius-lg);
  }
}
.tabs .tab, .tabs .tab-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: .55rem var(--space-4);
  border-radius: var(--radius-pill);
  font-size: .85rem; font-weight: 600;
  color: var(--on-surface-variant);
  background: none; border: none; cursor: pointer; font-family: inherit;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.tabs .tab.active, .tabs .tab-btn.active {
  background: var(--primary); color: var(--on-primary);
  box-shadow: var(--elev-1);
}
.tab-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
}
.tab-btn__icon svg { display: block; }

/* Underline tabs (rooms detail) — when .tabs has .tabs--underline */
.tabs--underline {
  display: flex; gap: var(--space-2);
  border-bottom: 1px solid var(--outline-variant);
  border-radius: 0; padding: 0; background: none; margin-bottom: var(--space-5);
}
.tabs--underline .tab, .tabs--underline .tab-btn {
  flex: none; padding: .6rem var(--space-4); border-radius: 0;
  color: var(--on-surface-variant); background: none; border: none;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs--underline .tab.active, .tabs--underline .tab-btn.active {
  background: none; color: var(--primary); box-shadow: none;
  border-bottom-color: var(--primary);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ════════════════════════════════════════════════════════════════════
   OTP INPUT COMPONENT
   ════════════════════════════════════════════════════════════════════ */
.otp-input {
  display: flex; gap: var(--space-2); justify-content: center;
  direction: ltr; margin: var(--space-2) 0;
}
.otp-input__box {
  width: 48px; height: 56px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.4rem; font-weight: 700;
  color: var(--on-surface);
  background: var(--surface-container-lowest);
  border: 1.5px solid var(--outline);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  -moz-appearance: textfield;
}
.otp-input__box::-webkit-outer-spin-button,
.otp-input__box::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.otp-input__box:focus {
  outline: none; border-color: var(--primary);
  box-shadow: var(--elev-1);
}
.otp-input__box.is-filled { border-color: var(--primary); }
.otp-input__hidden { display: none; }

/* ════════════════════════════════════════════════════════════════════
   UPLOAD / IMPORT helpers (used by participant/room modal partials)
   ════════════════════════════════════════════════════════════════════ */
.upload-box {
  border: 1.5px dashed var(--outline);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  margin-bottom: var(--space-4);
  position: relative;
  transition: border-color var(--dur-fast), background var(--dur-fast);
  background: var(--surface-container-low);
}
.upload-box:hover { border-color: var(--primary); background: var(--primary-container); }
.upload-label {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: .85rem; font-weight: 600; cursor: pointer;
  padding: .5rem 1rem; border-radius: var(--radius-pill);
  background: var(--primary-container); color: var(--on-primary-container);
}
.upload-box input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-hint { font-size: .76rem; color: var(--on-surface-faint); margin-top: var(--space-2); line-height: 1.6; }

.format-box {
  background: var(--surface-container);
  border-radius: var(--radius-sm);
  padding: .8rem 1rem;
  margin-bottom: var(--space-4);
  font-size: .8rem;
}
.format-box__title { color: var(--on-surface-variant); margin-bottom: var(--space-2); font-weight: 600; }
.format-box__row { direction: ltr; text-align: right; font-family: var(--font-mono); color: var(--on-surface); }

.sample-link {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: .82rem; color: var(--primary); font-weight: 600;
  margin-bottom: var(--space-4); transition: opacity var(--dur-fast);
}
.sample-link:hover { opacity: .8; }

.import-result {
  font-size: .85rem; margin: var(--space-3) 0; padding: .8rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--success-container); color: var(--success);
}
.import-errors {
  font-size: .76rem; color: var(--error); margin-top: var(--space-2);
  max-height: 140px; overflow-y: auto;
  background: var(--error-container); padding: .6rem .8rem; border-radius: var(--radius-sm);
}

/* Search result list (group_detail modal) */
.search-result-list {
  max-height: 240px; overflow-y: auto;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  background: var(--surface-container-lowest);
}
.search-result-item {
  padding: .7rem .9rem; font-size: .88rem; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--outline-variant);
  transition: background var(--dur-fast);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--primary-container); color: var(--on-primary-container); }
.search-result-item .mobile { color: var(--on-surface-faint); direction: ltr; font-family: var(--font-mono); font-size: .82rem; }

/* ════════════════════════════════════════════════════════════════════
   SHARED TOAST
   ════════════════════════════════════════════════════════════════════ */
.panel-toast {
  position: fixed; top: var(--space-5); left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: var(--on-surface); color: var(--surface);
  padding: .75rem 1.25rem; border-radius: var(--radius-pill);
  font-size: .85rem; font-weight: 600;
  box-shadow: var(--elev-3); z-index: 200;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-med), transform var(--dur-med);
}
.panel-toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.panel-toast--error { background: var(--error); color: var(--on-error); }
.panel-toast--success { background: var(--success); color: var(--on-success); }

/* ════════════════════════════════════════════════════════════════════
   MISC HELPERS
   ════════════════════════════════════════════════════════════════════ */
.sep { display: flex; align-items: center; gap: var(--space-3); color: var(--on-surface-faint); font-size: .78rem; }
.sep::before, .sep::after { content: ""; flex: 1; border-top: 1px solid var(--outline-variant); }

.page-sub { font-size: .88rem; color: var(--on-surface-variant); margin-bottom: var(--space-5); }
.page-header { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-4); margin-bottom: var(--space-6); flex-wrap: wrap; }
.back-link { display: inline-flex; align-items: center; gap: var(--space-2); font-size: .85rem;
  color: var(--on-surface-variant); margin-bottom: var(--space-4); transition: color var(--dur-fast); }
.back-link:hover { color: var(--primary); }

/* Responsive table → cards on narrow screens */
@media (max-width: 640px) {
  table, thead, tbody, th, td, tr { display: block; }
  thead { display: none; }
  tbody tr { border: 1px solid var(--outline-variant); border-radius: var(--radius-md); margin-bottom: var(--space-3); padding: var(--space-2); }
  tbody td { border: none; padding: .35rem 0; }
  tbody tr:hover td { background: transparent; }
}