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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #002855 0%, #001a3a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.register-container {
    width: 100%;
    max-width: 500px;
}

.register-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    padding: 3rem;
}

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

.register-header h1 {
    color: #002855;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.register-header p {
    color: #666;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #333;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #002855;
    box-shadow: 0 0 0 3px rgba(0, 40, 85, 0.1);
}

.form-group small {
    display: block;
    color: #666;
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.btn {
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(135deg, #002855 0%, #001a3a 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 40, 85, 0.3);
}

.btn .material-icons {
    font-size: 1.2rem;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-error {
    background: #fee;
    color: #c33;
    border-left: 4px solid #c33;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border-left: 4px solid #3c3;
}

.alert-success .btn-link {
    display: inline-block;
    margin-left: 1rem;
    color: #002855;
    font-weight: 600;
    text-decoration: none;
}

.alert-success .btn-link:hover {
    text-decoration: underline;
}

.register-footer {
    margin-top: 1.5rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #e0e0e0;
    color: #666;
}

.register-footer a {
    color: #002855;
    font-weight: 600;
    text-decoration: none;
}

.register-footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    .register-container {
        max-width: 100%;
    }

    .register-card {
        padding: 1.5rem;
    }

    .register-header h1 {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .form-group input {
        font-size: 16px; /* Previene zoom en iOS */
    }

    .btn {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0.5rem;
    }

    .register-card {
        padding: 1rem;
    }

    .register-header h1 {
        font-size: 1.3rem;
    }

    .register-header p {
        font-size: 0.85rem;
    }

    .alert {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
}