:root {
    --azul-oscuro: #1e3a8a;
    --azul-medio: #3b82f6;
    --azul-claro: #eff6ff;
    --blanco: #ffffff;
    --gris: #64748b;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--azul-claro);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: var(--blanco);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

h2 {
    color: var(--azul-oscuro);
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.2rem;
}

label {
    display: block;
    color: var(--azul-oscuro);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

input, select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--azul-medio);
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--azul-medio);
    color: var(--blanco);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--azul-oscuro);
}

.error {
    color: #ef4444;
    background-color: #fee2e2;
    padding: 0.5rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    text-align: center;
}

.nav-links {
    margin-top: 1.5rem;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.nav-links a {
    color: var(--azul-medio);
    text-decoration: none;
}

.nav-links a:hover {
    text-decoration: underline;
}