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

body {
  font-family: Arial, sans-serif;
  background: #f3f4f6;
  color: #111827;
}

.screen {
  display: none;
  min-height: 100vh;
}

.screen.active {
  display: block;
}

.login-box {
  width: 360px;
  background: white;
  padding: 32px;
  border-radius: 18px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.12);
  margin: 100px auto;
  text-align: center;
}

.login-box h1 {
  margin-bottom: 8px;
}

.login-box p {
  color: #6b7280;
  margin-bottom: 20px;
}

input {
  width: 100%;
  padding: 14px;
  margin: 8px 0 16px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  font-size: 15px;
}

button {
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: #111827;
  color: white;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #374151;
}

.error {
  color: #b91c1c;
  margin-top: 12px;
}

.mensaje {
  margin-top: 16px;
  font-weight: bold;
}

header {
  background: #111827;
  color: white;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logout-btn {
  background: #374151;
}

.dashboard {
  max-width: 1100px;
  margin: 50px auto;
  padding: 0 20px;
}

.dashboard h2 {
  margin-bottom: 24px;
  font-size: 28px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card {
  background: white;
  color: #111827;
  text-align: left;
  padding: 28px;
  border-radius: 18px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.card span {
  width: 42px;
  height: 42px;
  background: #111827;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-weight: bold;
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  color: #6b7280;
}

.form-container {
  max-width: 650px;
  margin: 40px auto;
  background: white;
  padding: 30px;
  border-radius: 18px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

label {
  font-weight: bold;
}

.hidden {
  display: none;
}

.aviso-box {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  padding: 18px;
  border-radius: 12px;
  margin-top: 20px;
}

.aviso-box p {
  margin-bottom: 12px;
  color: #9a3412;
  font-weight: bold;
}

.aviso-box button {
  margin-top: 8px;
  width: 100%;
}

.resultado {
  margin-top: 24px;
}

.cliente-card {
  background: #f9fafb;
  padding: 18px;
  border-radius: 14px;
  margin-top: 16px;
  border: 1px solid #e5e7eb;
}

.entrega-item {
  background: white;
  padding: 12px;
  border-radius: 10px;
  margin: 10px 0;
  border: 1px solid #e5e7eb;
}

.entrega-pagada {
  background: #ecfdf5;
  border: 2px solid #86efac;
}

.entrega-debe {
  background: white;
  border: 1px solid #e5e7eb;
}

.entrega-incompleta {
  background: #fffbeb;
  border: 2px solid #facc15;
}

.estado-pagado {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #bbf7d0;
  color: #166534;
  font-weight: bold;
}

.estado-debe {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #fee2e2;
  color: #991b1b;
  font-weight: bold;
}

.estado-incompleto {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #fef3c7;
  color: #92400e;
  font-weight: bold;
}

.btn-pagar-entrega {
  margin-top: 12px;
  width: 100%;
  background: #15803d;
}

.btn-pagar-entrega:hover {
  background: #166534;
}

.btn-pago-incompleto {
  margin-top: 10px;
  width: 100%;
  background: #ca8a04;
}

.btn-pago-incompleto:hover {
  background: #a16207;
}

.total-box {
  margin-top: 18px;
  padding: 16px;
  border-radius: 12px;
  background: #ecfdf5;
  border: 1px solid #bbf7d0;
}

.no-encontrado {
  background: #fee2e2;
  color: #991b1b;
  padding: 14px;
  border-radius: 10px;
  margin-top: 18px;
}

.subtitulo {
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 20px;
}

.lista-clientes {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cliente-lista-btn {
  width: 100%;
  text-align: left;
  background: #f9fafb;
  color: #111827;
  border: 1px solid #e5e7eb;
  padding: 14px;
  border-radius: 12px;
}

.cliente-lista-btn:hover {
  background: #e5e7eb;
}

.cliente-lista-btn strong {
  display: block;
  font-size: 16px;
}

.cliente-lista-btn span {
  color: #6b7280;
  font-size: 14px;
}

.estado-cuenta-box {
  background: #f9fafb;
  padding: 18px;
  border-radius: 14px;
  margin-top: 18px;
  border: 1px solid #e5e7eb;
}

.estado-cuenta-box h3 {
  margin-bottom: 12px;
}

.estado-cuenta-item {
  background: white;
  border: 1px solid #e5e7eb;
  padding: 12px;
  border-radius: 10px;
  margin: 10px 0;
}

.acciones-estado-cuenta {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}

.acciones-estado-cuenta button {
  width: 100%;
}

.btn-pdf {
  background: #111827;
}

.btn-pdf:hover {
  background: #374151;
}

.btn-whatsapp {
  background: #16a34a;
}

.btn-whatsapp:hover {
  background: #15803d;
}

@media (max-width: 1000px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 800px) {
  .cards {
    grid-template-columns: 1fr;
  }

  header {
    padding: 18px 20px;
  }

  .login-box {
    width: 90%;
  }

  .acciones-estado-cuenta {
    flex-direction: column;
  }
}

.estado-cuenta-item.entrega-pagada {
  background: #ecfdf5;
  border: 2px solid #86efac;
}

.estado-cuenta-item.entrega-incompleta {
  background: #fffbeb;
  border: 2px solid #facc15;
}

.estado-cuenta-item.entrega-debe {
  background: white;
  border: 1px solid #e5e7eb;
}

.total-box.entrega-pagada {
  background: #ecfdf5;
  border: 2px solid #86efac;
}

.total-box.entrega-incompleta {
  background: #fffbeb;
  border: 2px solid #facc15;
}