:root {
  --color-primary: #05c3dd;
  --color-primary-dark: #048ca6;
  --color-primary-darker: #036575;
  --color-primary-light: #e5fbfe;
  --color-primary-soft: #c3f4fa;

  --color-accent: #ffb703;
  --color-accent-dark: #e09b00;

  --color-success: #2ecc71;
  --color-warning: #ffb703;
  --color-error: #e74c3c;

  --color-dark: #0b2027;
  --color-gray-700: #3e5c63;
  --color-gray-500: #6b8890;
  --color-gray-400: #8fa9ae;
  --color-gray-200: #d7e7ea;
  --color-gray-100: #f4fbfc;
  --color-white: #ffffff;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;

  --shadow-md: 0 8px 24px rgba(11, 32, 39, 0.12);

  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-white) 320px);
  color: var(--color-dark);
  min-height: 100vh;
}

.page {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--space-5, 40px) 20px 60px;
}

.brand {
  text-align: center;
  margin-bottom: 24px;
}
.brand .logo {
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--color-primary-darker);
  letter-spacing: -0.02em;
}
.brand .school-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-gray-700);
  margin: 4px 0 0;
}
.brand p {
  color: var(--color-gray-500);
  margin-top: 4px;
  font-size: 0.95rem;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px 24px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  color: var(--color-dark);
}
.card .hint {
  margin: 0 0 20px;
  font-size: 0.9rem;
  color: var(--color-gray-500);
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: 6px;
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="date"] {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  margin-bottom: 16px;
  font-family: inherit;
  transition: border-color 0.15s ease;
}
input:focus {
  outline: none;
  border-color: var(--color-primary);
}
input:disabled {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
}

button {
  width: 100%;
  padding: 13px 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}
button:hover:not(:disabled) { background: var(--color-primary-dark); }
button:disabled { background: var(--color-gray-400); cursor: not-allowed; }

button.secondary {
  background: transparent;
  color: var(--color-primary-darker);
  border: 1.5px solid var(--color-gray-200);
  margin-top: 8px;
}
button.secondary:hover:not(:disabled) { background: var(--color-primary-light); }

.saldo-box {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  margin-bottom: 20px;
}
.saldo-box .familia-nombre {
  font-size: 0.85rem;
  color: var(--color-gray-700);
  margin-bottom: 4px;
}
.saldo-box .monto {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-darker);
}

.feedback {
  display: none;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.4;
}
.feedback.show { display: block; }
.feedback.error { background: #fdecea; color: #a5321f; }
.feedback.success { background: #e8f9ee; color: #1c7a41; }
.feedback.info { background: var(--color-primary-light); color: var(--color-primary-darker); }

.step { display: none; }
.step.active { display: block; }

.field-hint {
  font-size: 0.78rem;
  color: var(--color-gray-500);
  margin-top: -12px;
  margin-bottom: 16px;
}

.footer-note {
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-gray-400);
  margin-top: 20px;
}