*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #1A56DB;
  --primary-light: #E8EEFB;
  --bg: #F8F9FA;
  --surface: #ffffff;
  --text: #111827;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --success: #059669;
  --danger: #DC2626;
  --header-h: 56px;
  --nav-h: 56px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 4px rgba(0,0,0,0.08);
  --transition: 200ms ease;
  --font-size: 16px;
}

[data-theme="dark"] {
  --bg: #111827;
  --surface: #1F2937;
  --text: #F9FAFB;
  --text-muted: #9CA3AF;
  --border: #374151;
}

[data-theme="light"] {
  --bg: #F8F9FA;
  --surface: #ffffff;
  --text: #111827;
  --text-muted: #6B7280;
  --border: #E5E7EB;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--font-size);
  color: var(--text);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  min-height: 100dvh;
  overflow: hidden;
}

.hidden { display: none !important; }

.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  min-height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 6px 12px;
  gap: 12px;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-left {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header-center {
  flex: 1;
  position: relative;
  min-width: 0;
}

.header-center .search-input {
  margin-bottom: 0;
  padding: 8px 12px 8px 34px;
  font-size: 0.9375rem;
  width: 100%;
}

.header-search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.875rem;
  pointer-events: none;
  z-index: 1;
}

.header-right {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 2px;
}

.sort-dropdown {
  position: relative;
}

.sort-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 140px;
  z-index: 200;
  overflow: hidden;
}

.sort-option {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: none;
  background: transparent;
  text-align: left;
  font-size: 0.875rem;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition);
}

.sort-option:hover { background: var(--primary-light); }

.sort-option.active {
  color: var(--primary);
  font-weight: 600;
}

.app-header h1 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary);
}

.header-start {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.app-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.app-header .btn-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
}

.app-header .btn-icon:active { transform: scale(0.97); background: var(--primary-light); }

#btn-view-toggle {
  color: var(--primary);
  font-size: 1.3rem;
}

.app-main {
  flex: 1 1 0;
  min-height: 0;
  margin-top: var(--header-h);
  margin-bottom: var(--nav-h);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

.app-shell--no-nav .app-main {
  margin-bottom: 0;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
}

.fab-add {
  position: fixed;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow);
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
}

.fab-add:active { transform: scale(0.95); }

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav--has-fab {
  padding-left: calc(20% + env(safe-area-inset-left));
  padding-right: calc(20% + env(safe-area-inset-right));
}

@media (max-width: 360px) {
  .bottom-nav button span:not(.nav-icon) { display: none; }
}

.bottom-nav button {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 2px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.625rem;
  cursor: pointer;
  transition: color var(--transition);
  min-height: var(--nav-h);
}

.bottom-nav button .nav-icon { font-size: 1.1rem; }

.bottom-nav button.active {
  color: var(--primary);
}

.bottom-nav button:active { transform: scale(0.97); }

.offline-banner {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: #FEF3C7;
  color: #92400E;
  text-align: center;
  padding: 8px;
  font-size: 0.8125rem;
  z-index: 99;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary);
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
}

.filter-chip:active { transform: scale(0.95); }

.filter-chip.active {
  background: var(--primary);
  color: #fff;
}

.filter-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0;
}

.view-busqueda-layout {
  display: flex;
  min-height: calc(100dvh - var(--header-h) - var(--nav-h));
}

.view-generic-layout {
  display: flex;
  min-height: calc(100dvh - var(--header-h) - var(--nav-h));
}

.view-externos-layout {
  display: flex;
  min-height: calc(100dvh - var(--header-h) - var(--nav-h));
}

.view-recientes > .view-generic-layout > #recientes-list,
.view-frecuentes > .view-generic-layout > #frecuentes-list,
.view-mis-personal > .view-generic-layout > #mis-list {
  flex: 1;
  padding: 12px;
  padding-bottom: 80px;
}

.view-generic-layout.has-letter-index {
  flex-direction: row;
}

.view-generic-layout.letter-index-left {
  flex-direction: row-reverse;
}

.view-generic-layout.letter-index-right {
  flex-direction: row;
}

.view-mis-personal.has-letter-index > .view-generic-layout > #mis-list {
  padding-left: 0;
  padding-right: 0;
}

.view-mis-personal.has-letter-index > .view-generic-layout > .fab-add {
  position: fixed;
}

.view-generic-layout.letter-index-left > .letter-index {
  border-right: 1px solid var(--border);
}

.view-generic-layout.letter-index-right > .letter-index {
  border-left: 1px solid var(--border);
}

.view-por-sede-layout.has-letter-index > #sede-contactos {
  display: flex;
  flex: 1;
  min-height: 0;
}

.view-por-sede-layout.has-letter-index > #sede-contactos > .contact-list,
.view-por-sede-layout.has-letter-index > #sede-contactos > .contact-cards-grid {
  flex: 1;
  padding-bottom: 80px;
}

.view-por-sede-layout.has-letter-index > #sede-contactos > .letter-index {
  flex: 0 0 28px;
  width: 28px;
  align-self: flex-start;
  position: sticky;
  top: 0;
  height: calc(100dvh - var(--header-h) - var(--nav-h) - env(safe-area-inset-bottom));
  max-height: calc(100dvh - var(--header-h) - var(--nav-h) - env(safe-area-inset-bottom));
  padding: 6px 2px;
  box-sizing: border-box;
  background: var(--bg);
  z-index: 1;
}

.view-por-sede-layout.has-letter-index.letter-index-left > #sede-contactos > .letter-index {
  border-right: 1px solid var(--border);
}

.view-por-sede-layout.has-letter-index.letter-index-right > #sede-contactos > .letter-index {
  border-left: 1px solid var(--border);
}

.view-busqueda-layout--index-left { flex-direction: row-reverse; }

.view-busqueda-layout--index-right { flex-direction: row; }

.view-busqueda-layout--index-left .view-busqueda-content { padding-left: 0; }
.view-busqueda-layout--index-right .view-busqueda-content { padding-right: 0; }

.view-externos-layout.has-letter-index { flex-direction: row; }

.view-externos-layout.letter-index-left { flex-direction: row-reverse; }

.view-externos-layout.letter-index-right { flex-direction: row; }

.view-externos-layout.has-letter-index > #externos-list {
  flex: 1;
  padding: 12px;
  padding-bottom: 80px;
}

.view-externos-layout.letter-index-left > .letter-index {
  border-right: 1px solid var(--border);
}

.view-externos-layout.letter-index-right > .letter-index {
  border-left: 1px solid var(--border);
}

.view-content {
  flex: 1;
  min-width: 0;
  padding: 12px;
  padding-bottom: 80px;
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.view-title {
  font-size: 1rem;
  font-weight: 600;
}

.contact-list {
  display: flex;
  flex-direction: column;
}

.letter-index {
  flex: 0 0 28px;
  width: 28px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: stretch;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  align-self: flex-start;
  height: calc(
    100dvh - var(--header-h) - var(--nav-h) - env(safe-area-inset-bottom)
  );
  max-height: calc(
    100dvh - var(--header-h) - var(--nav-h) - env(safe-area-inset-bottom)
  );
  padding: 6px 2px;
  box-sizing: border-box;
  background: var(--bg);
  z-index: 1;
}

.view-busqueda-layout--index-left .letter-index,
.view-generic-layout.letter-index-left .letter-index,
.view-externos-layout.letter-index-left .letter-index {
  border-right: 1px solid var(--border);
}

.view-busqueda-layout--index-right .letter-index,
.view-generic-layout.letter-index-right .letter-index,
.view-externos-layout.letter-index-right .letter-index {
  border-left: 1px solid var(--border);
}

.letter-index.hidden {
  display: none;
}

.letter-index__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding: 0 2px;
  font-family: inherit;
  box-sizing: border-box;
}

.letter-index__btn--active {
  flex: 1 1 0;
  min-height: 0;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--primary);
  font-size: 0.625rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
  margin: 1px 0;
}

.letter-index__btn--active:active {
  background: color-mix(in srgb, var(--primary) 18%, transparent);
}

.letter-index__btn--empty {
  flex: 0 0 auto;
  font-size: 0.4rem;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.7;
  padding: 0;
  min-height: 0;
  user-select: none;
}

@media (min-width: 400px) {
  .letter-index {
    flex-basis: 32px;
    width: 32px;
  }

  .letter-index__btn--active {
    font-size: 0.6875rem;
  }

  .letter-index__btn--empty {
    font-size: 0.4375rem;
  }
}

.settings-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding-left: 4px;
  padding-right: 4px;
  gap: 4px;
}

.settings-header .header-left {
  flex-shrink: 0;
}

.settings-header .header-left .app-logo {
  height: 28px;
  width: auto;
  display: block;
}

.settings-header-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.settings-header-center .btn-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.settings-header-center h1 {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0;
  white-space: nowrap;
}

.settings-nav-tabs {
  display: flex !important;
  flex-shrink: 0;
  gap: 0;
}

.settings-nav-btn {
  padding: 6px 5px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.settings-nav-btn svg {
  display: block;
  width: 22px;
  height: 22px;
}

.settings-nav-btn:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.settings-nav-btn.active {
  color: var(--primary);
}

.settings-page {
  padding: 12px;
  padding-bottom: 24px;
}

.settings-back {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 36px;
  margin-bottom: 16px;
}

.settings-tab-title {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--primary);
  text-transform: uppercase;
}

.settings-back-btn {
  position: relative;
  z-index: 1;
  width: auto;
  min-width: 36px;
  height: 36px;
  padding: 0 10px 0 8px;
  gap: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
}

.settings-back-btn:active {
  transform: scale(0.97);
  background: var(--primary-light);
}

.settings-back-btn__icon {
  flex-shrink: 0;
  display: block;
}

.settings-section {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}

.settings-section h2 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
  margin-top: 2px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}

.settings-row:last-child { border-bottom: none; }

.settings-row label {
  font-size: 0.8125rem;
  flex: 1;
  min-width: 0;
}

.settings-row select {
  flex-shrink: 0;
  font-size: 0.8125rem;
}

.settings-row input[type="checkbox"] {
  flex-shrink: 0;
}

.settings-row .settings-label {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.settings-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0 0 8px;
  line-height: 1.4;
}

.settings-subheading {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 0 0 4px;
}

.settings-user-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.settings-user-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.settings-user-list li:last-child {
  border-bottom: none;
}

.settings-page .form-group {
  margin-bottom: 10px;
}

.settings-page .form-group label {
  font-size: 0.8125rem;
  display: block;
  margin-bottom: 4px;
}

.settings-page .form-group input,
.settings-page .form-group select {
  width: 100%;
  padding: 8px 10px;
  font-size: 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
}

.share-app-body .share-url-wrap {
  margin: 12px 0;
}

.share-url-input {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.875rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  box-sizing: border-box;
}

.share-qr-wrap {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

.share-app-sheet {
  padding-bottom: 24px;
}

.virtual-list {
  position: relative;
  width: 100%;
}

.virtual-list-inner {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}

.virtual-list-item {
  position: absolute;
  left: 0;
  right: 0;
  will-change: transform;
}

.error-msg {
  color: var(--danger);
  font-size: 0.875rem;
  margin-bottom: 12px;
  text-align: center;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.9375rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 0;
}

.settings-action-btn {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  margin-bottom: 8px;
}

.settings-action-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.settings-action-btn:active {
  transform: scale(0.99);
}

.settings-action-btn.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.settings-action-btn.primary:hover {
  background: color-mix(in srgb, var(--primary) 85%, white);
}

.settings-action-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.settings-action-btn:last-child {
  margin-bottom: 0;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* Pantalla de login */
body:has(.login-page) {
  overflow: auto;
}

.login-page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow);
}

.login-page .logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo {
  height: 48px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  display: block;
  margin: 0 auto 12px;
}

.login-page .logo p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.4;
}

.login-card #login-form .btn-primary {
  margin-top: 4px;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.875rem;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}