/* ============================================================
   FiaDOX — Estilos principales
   Abarrotes Virrey
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Lora:wght@400;600;700&family=Source+Sans+3:wght@400;500;600;700&display=swap');

/* ── Variables de tema claro ── */
:root {
  --blue:        #1E5AA8;
  --blue-dark:   #174d94;
  --blue-light:  #d6e4f7;
  --blue-muted:  #4a7fc1;

  --bg:          #e1e1e1;
  --surface:     #ffffff;
  --surface-2:   #f4f4f4;
  --border:      #d0d0d0;

  --text:        #1a1a1a;
  --text-2:      #4a4a4a;
  --text-3:      #7a7a7a;

  --success:     #1a7a3c;
  --success-bg:  #d4edda;
  --danger:      #b91c1c;
  --danger-bg:   #fde8e8;
  --warning:     #92400e;
  --warning-bg:  #fef3c7;

  --charge-color: #b91c1c;
  --charge-bg:    #fde8e8;
  --payment-color:#1a7a3c;
  --payment-bg:   #d4edda;

  --radius:      10px;
  --radius-sm:   6px;
  --shadow:      0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.12);

  --font-display: 'Lora', Georgia, serif;
  --font-body:    'Source Sans 3', 'Segoe UI', sans-serif;

  --transition: 0.18s ease;
}

/* ── Variables de tema oscuro ── */
[data-theme="dark"] {
  --bg:        #0f2744;
  --surface:   #13325a;
  --surface-2: #1a3d6e;
  --border:    #1e4f8a;

  --text:      #eef4ff;
  --text-2:    #b8d0f0;
  --text-3:    #7a9fc8;

  --blue-light: #1a3d6e;
  --blue:       #4a8fd4;
  --blue-dark:  #3a7fc4;

  --charge-color: #f87171;
  --charge-bg:    #3b1212;
  --payment-color:#6ee7a0;
  --payment-bg:   #0d3320;

  --success-bg:  #0d3320;
  --danger-bg:   #3b1212;
  --warning-bg:  #3b2a0a;
}

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

html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: var(--font-body); }
a { color: var(--blue); }
input, select, textarea { font-family: var(--font-body); font-size: 1rem; }

/* ── Utilidades de visibilidad ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Layout principal ── */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */
.app-header {
  background: var(--surface);
  border-bottom: 2px solid var(--blue);
  padding: 0 1.2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  height: 64px;
}

.header-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: -0.02em;
}

.brand-store {
  font-size: 0.72rem;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Botones ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  text-decoration: none;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition),
              transform 0.1s;
  line-height: 1.2;
  white-space: nowrap;
  min-height: 44px;
}

.btn:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); }

.btn-secondary {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}
.btn-secondary:hover { background: var(--blue-light); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { background: #991b1b; border-color: #991b1b; }

.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}
.btn-danger-outline:hover { background: var(--danger-bg); }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: transparent;
  padding: 0.5rem 0.7rem;
  min-height: 44px;
  min-width: 44px;
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-success {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}
.btn-success:hover { background: #145f2e; }

.btn-lg {
  padding: 0.85rem 1.6rem;
  font-size: 1.1rem;
  min-height: 52px;
  border-radius: var(--radius);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

/* Ícono en botón */
.btn svg { flex-shrink: 0; }

/* ── Página / contenedor ── */
.page {
  flex: 1;
  padding: 1.5rem 1.2rem 3rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Login ── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.2rem;
  background: var(--bg);
}

.login-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 0.2rem;
}

.login-subtitle {
  font-size: 0.85rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ── Formularios ── */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
  color: var(--text-2);
}

.required-mark { color: var(--danger); margin-left: 2px; }

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
select,
textarea {
  display: block;
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--surface-2);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  color: var(--text);
  transition: border-color var(--transition), background var(--transition);
  min-height: 48px;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(30,90,168,0.15);
}

input.input-error, select.input-error, textarea.input-error {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.field-error {
  display: block;
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 0.3rem;
  font-weight: 500;
}

.form-hint {
  display: block;
  color: var(--text-3);
  font-size: 0.83rem;
  margin-top: 0.3rem;
}

/* ── Alertas / mensajes ── */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  border-left: 4px solid;
  margin-bottom: 1rem;
}

.alert-error   { background: var(--danger-bg);  color: var(--danger);  border-color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); border-color: var(--success); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: #d97706; }

.alert ul { padding-left: 1.2rem; margin-top: 0.3rem; }
.alert li { margin-bottom: 0.15rem; }

/* ── Encabezado de sección ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.section-subtitle {
  font-size: 0.9rem;
  color: var(--text-3);
  margin-top: 0.1rem;
}

/* ── Barra de búsqueda ── */
.search-bar {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-bar input {
  flex: 1;
  min-width: 180px;
}

/* ── Lista de clientes ── */
.clients-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.client-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.client-row:hover {
  border-color: var(--blue-muted);
  box-shadow: 0 3px 12px rgba(30,90,168,0.1);
}

.client-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.client-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.client-phone {
  font-size: 0.85rem;
  color: var(--text-3);
}

.client-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ── Tarjeta de detalle de cliente ── */
.detail-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}

.client-detail-name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 0.15rem;
}

.client-detail-phone {
  color: var(--text-3);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.balance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.balance-item {
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.85rem;
  text-align: center;
  border: 1px solid var(--border);
}

.balance-item.highlight {
  background: var(--blue-light);
  border-color: var(--blue-muted);
}

.balance-label {
  font-size: 0.78rem;
  color: var(--text-3);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.balance-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.balance-item.highlight .balance-value {
  color: var(--blue);
}

.balance-item.highlight .balance-label {
  color: var(--blue-muted);
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

/* ── Sección de transacciones ── */
.tx-section-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.4rem;
}

.tx-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tx-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.tx-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.tx-charge {
  background: var(--charge-bg);
  color: var(--charge-color);
}

.tx-payment {
  background: var(--payment-bg);
  color: var(--payment-color);
}

.tx-info {
  flex: 1;
  min-width: 0;
}

.tx-date {
  font-size: 0.85rem;
  color: var(--text-3);
}

.tx-description {
  font-size: 0.88rem;
  color: var(--text-2);
  margin-top: 0.1rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tx-amount {
  font-size: 1.05rem;
  font-weight: 700;
  flex-shrink: 0;
  text-align: right;
}

.tx-amount.charge  { color: var(--charge-color); }
.tx-amount.payment { color: var(--payment-color); }

/* ── Paginación ── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
  padding: 0.5rem 0;
}

.page-info {
  font-size: 0.9rem;
  color: var(--text-3);
  font-weight: 500;
}

/* ── Spinner / Loading ── */
.spinner-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
  gap: 1rem;
  color: var(--text-3);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 4px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Estado vacío ── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-3);
}

.empty-state svg {
  margin: 0 auto 1rem;
  opacity: 0.3;
}

.empty-state p {
  font-size: 1.05rem;
  font-weight: 500;
}

/* ── Modal de confirmación ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 1.5rem;
  animation: fadeIn 0.15s ease;
}

.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow-md);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.modal-body {
  color: var(--text-2);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ── Botón de tema ── */
.theme-btn {
  font-size: 1.3rem;
  line-height: 1;
}

/* ── Navegación de vuelta ── */
.back-bar {
  display: flex;
  align-items: center;
  margin-bottom: 1.25rem;
}

/* ── Card de formulario ── */
.form-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow);
  max-width: 560px;
}

.form-card .form-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--border);
}

/* ── Divider ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.25rem 0;
}

/* ── Toast de sesión expirada ── */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 600;
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid #d97706;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow-md);
  animation: slideDown 0.3s ease;
  max-width: 90vw;
  text-align: center;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateX(-50%) translateY(-16px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 600px) {
  html { font-size: 17px; }

  .balance-grid {
    grid-template-columns: 1fr 1fr;
  }

  .balance-item:last-child {
    grid-column: 1 / -1;
  }

  .client-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .client-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .client-actions .btn {
    flex: 1;
    font-size: 0.9rem;
  }

  .detail-actions {
    flex-direction: column;
  }

  .detail-actions .btn {
    width: 100%;
  }

  .modal-actions {
    flex-direction: column-reverse;
  }

  .modal-actions .btn {
    width: 100%;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-header .btn {
    width: 100%;
  }

  .search-bar {
    flex-direction: column;
  }

  .search-bar .btn {
    width: 100%;
  }

  .form-card {
    padding: 1.25rem 1rem;
  }
}

@media (max-width: 400px) {
  .login-card {
    padding: 1.75rem 1.25rem;
  }
}

/* ── Animación de entrada de filas ── */
.client-row, .tx-row {
  animation: fadeIn 0.18s ease both;
}

/* ── focus ring global para inputs ── */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}